From the point of view of the species, it is optimal for people to live until they are about 31 years old. From an individual perspective, everyone wants to live another 500 years, but living too long is not conducive to human inheritance.
Figure: Greenland sleeper shark, life expectancy of up to 400 years
Human beings are nothing remarkable, if the Earth's 4.6 billion as a day, human beings appeared at 23:59, up and down 5000 years of civilization is the last 0.1 seconds. Many people may think that human beings are more powerful than dinosaurs, however, we may not be able to rule the Earth for 170 million years like the dinosaurs.
One thing we can be "proud" of is that the rate of extinction of species during the rise of human civilization exceeded the rate of extinction caused by an asteroid 65 million years ago. However, the Earth's resources were limited, and the dinosaurs rose to power, and the mammals were left to cower at their feet. Species on Earth are inextricably linked to each other, and we are all grasshoppers on a rope, and squeezing it without a bottom line is ultimately annihilating ourselves.
The continuation of a species does not depend on how long it lives, how complex its brain structure is, or how well it survives as an individual. For example:
30% of the world's population has been infected with a parasite, Toxoplasma gondii. This is especially true in Europe, where pets and raw meat are more common, and where 80% of French adults have been infected, but the French remain healthy because toxoplasmosis has been friendly*** in the body for decades, and so herd immunity is especially prevalent.
Mutations exist in all species, and if a "super-invincible" mutant Toxoplasma gondii were to emerge one day, it would take nutrients from the human body and reproduce rapidly, eventually draining the human population, and guess what, this more capable individual Toxoplasma gondii would be passed down for a longer period of time. The few times the virus has come and gone in humans, it ended up being a quick fix, so this answer is easy to come up with.
Pic: The incoming virus
From a species perspective, this super-powerful toxoplasma would be quickly eliminated. Because while they've upgraded their access to Earth's limited resources, they haven't upgraded their ability to spread, nor have they evolved the ability to spread more strongly across species, let alone the ability to access energy directly, meaning they'll always have to rely on their hosts.
Toxoplasma can **** around with their hosts for decades because they get what they need while keeping their hosts healthy. A super-mutated Toxoplasma gondii will kill the host in a short period of time, which is the same as killing itself, and ultimately, such a Toxoplasma gondii will not survive and will only be a short-lived phenomenon.
In this example Toxoplasma can represent a parasite, a virus, any species. What is strong? It is to mutate into more selfish and self-serving traits that can access more resources than others in the big picture. Being strong can only be concentrated in a few individuals, and if this mutation can be passed on, or even spread to the population, then the population is not far from extinction.
Therefore, the species that can be inherited on Earth for a long time are not because the individual is too strong, and most of the species that are too strong live to become endangered species.
Single-celled microbes such as cyanobacteria have been on Earth for billions of years. Their lives are fleeting, but as long as they live they will continue to reproduce offspring, producing enough mutated individuals. Although the earth a little bit of wind and grass will be a large number of death, but even if the death of 99.99%, as long as a few of them can adapt to changes in the environment, will soon be spread throughout the earth, can be said to be a "wildfire inexhaustible, the spring breeze blowing again".
The difference between humans and other species is that we are not at the mercy of fate, and when the cold winds come, we can light bonfires, put on clothes, and build fences. Therefore humans, as a species with more access to energy and less ability to reproduce, are not able to dramatically increase the diversity of the human race, but can still stand at the pinnacle of the planet. Understanding this, you will realize how ridiculous it is to give up active defense and implement the so-called "herd immunity", which can obviously block the spread of microorganisms, and if only 0.01% is left, it means the loss of diversity, which makes us look "weak" in front of the ever-changing environment. "
This is the first time I've seen a microorganism in my life.
For example, pandas eat bamboo instead of meat because of lack of supplies, and this single food leaves them with no choice. When the environment changes and bamboo disappears on a large scale, or bamboo is infected with blight or pockmark disease that can spread on a large scale, then pandas can only go extinct.
Humans can resist environmental change to a certain extent through technological means, but the time is still short, and there are still many unknowns ahead. Enhancing human diversity would give humans more options for surviving the species crisis. However, resources are finite, and a viable way to maximize the number of samples in a finite population is to "make room" for them once they have reproduced and nourished themselves as adults.
For example, humans can give birth at about 15 years old, it takes 1 year to get pregnant, and another 15 years to raise the offspring to a fertile stage, so 31 years old is the optimal lifespan for Homo sapiens to "pass on the species". However, it is still true that powerful individuals are selfish, especially those with "spiritual intelligence", and who wouldn't want to live a long life.
This question puts life into perspective, too long life is inevitably suffering, to their own children are a burden, to go peacefully is also a blessing. As for how many years to live, it may not be important to live a worthy life is the most important.
To say how many years to live to the most appropriate, Ancient people say: life is 70 years old. The first thing you need to do is to get your hands on a new pair of shoes or boots.
In the past, seventy years old is a long life, put now everywhere, and is more and more. According to data released by the National Health Commission, China's average life expectancy of male 73 years old, female 77 years old, live less than 70 are failing, not to mention appropriate.
So, with the passage of time, live how many years the most appropriate is gradually changing, and more and more demanding on us, accidentally live inappropriate.
Nowadays, how old is the right age to live? What happens to people who live too long?
These two questions, I think we need to discuss them from a social perspective, a family perspective and a personal perspective respectively.
Social angle: the helpless collision of responsibility and rights
From the perspective of social responsibility, there are two main social missions for people to live: life inheritance and social construction
In a person's life, from the croaking of a child to the gray hairs of a person's head, he or she has to go to his or her grave. During this period, there are two things that must be done, that is, to pass on life and build society.
Inheritance of life: When we have the next generation, and will raise him up and cultivate him into a society of talent, can be based on the society of adults, the inheritance of the social responsibility of life is completed.
Social construction: People do not live only for themselves and their families, when you work hard in society, to complete the task in hand, whether it is the service industry or high-precision scientific and technological fields, we are all in the promotion of the development of this society.
The work is not expensive, like the gears of the machine, no matter how big or small, less any of them can not function properly. It's just that the human heart is frivolous, creating that superiority, in front of the life and death, are just as small.
The average person in 40, 50 years old will be able to fulfill the responsibility of life inheritance.
But the responsibility of building a society is closely related to the age of retirement. Only when you reach the age of retirement, the day of your honorable retirement, you complete the responsibility entrusted to you by the society,
According to the WHO's division of the age group, 66 to 79 years old is not considered as an old person, but still a middle-aged person.
Of course, after the responsibility is finished, I have to enjoy my rights and interests.
I've been paying pension insurance for 40 years, and according to the calculation of 20,000 per year, I've paid 800,000 before I retire***. If I get $4,000 per month for my pension, that's $50,000 per year. So, I need to live 16 years to get my 800k entitlement in hand.
So, in terms of social responsibility and entitlement, it's appropriate for us to live to at least 80 years old.
Family perspective: the dual role of parents and childrenTo discuss how long it is appropriate for an elderly person to live from a family perspective, we need to look at it from the perspective of the children and from the perspective of the parents.
Children's point of view: From this point of view, there is really no need to consider how many years the parents live, as long as the children care about the elderly in their old age, careful care of them, and do their best to take care of the elderly in place is good.
The children should hope that their parents live as long as possible, the home must have parents in order to call home, no parents, there is no root. When your parents leave, you will never see them again. The people who love you the most in this life are gone, and it hurts to think about this kind of thing.
So, thinking from the perspective of the children, the longer the life of the elderly at home, the better, there is no doubt about it.
Parent's perspective: Since ancient times, there are only children who don't love their mother, there is no mother who doesn't love her. As parents, to the old age, the first consideration is still the life of the children.
When the old man is already high, life can not take care of themselves, if the children can do filial piety, in front of the hospital bed care, as parents can enjoy the joy of heaven, and spend the rest of the year. Whether you live to 80 or 100, it's a blessing.
If the children's family because of the care of elderly parents and quarrels, because who to the old age and the enemy, as parents have become the children's baggage, then whether it is to live to 80 or high life 100, the day will not be good, in the end how much is appropriate is also not any meaning!
Personal perspective: the final choice between living and leavingLife is made up of countless choices, any one of which will affect the rest of our lives. We finally shape the trajectory of this life after making thousands of choices.
This time, whether it's better to choose to live or leave is completely dependent on every choice you've made in the past.
People to seventy, do not try to be strong, do not serve the old can not be, most of the elderly began to stay around the things, from time to time will recall the past;
People to eighty, the pension has been taken enough, should be seen to open up, live one day more is to earn, peace of mind to enjoy the later years of life;
< strong> People to ninety, earned ten years, has more than 99% of the people, thanks to favor, obey the arrangement, waiting for the arrival of that day.
People live a life, each stage has each stage of responsibility, each stage depends on your last stage of choice and pay. Trying to live this stage of life will determine whether it is appropriate for you to live in each subsequent stage.
If you consistently fail to take on the responsibilities of society and family, you are not failing others, you are burying your right to choose and blocking the opportunity to live.
People who live too long get sick, lose their mobility and autonomy in life, and become a problem for their children.The old man, the body will often have problems with a disease called "geriatrics".
As the name suggests, it is the old man, all parts of the body are in need of repair, are prone to problems, which is the biggest problem plaguing the elderly and children.
High blood pressure, coronary heart disease, vision, hearing, reduced mobility are all troublesome, all will make the original comfortable life suffered a change.
Some of the elderly eighty years old, healthy, can eat and drink, life can also take care of themselves, live naturally happy; but some of the elderly people only seventy years of age, mobility, loss of mobility, and even need to be close to the children to take care of, which is in the test of filial piety and patience of the children.
Most people know "You raise me small, I raise you old", the older the parents, the more energy and time you need to spend to take care of the elderly, do not complain, optimistic to face, try to overcome.
But also said that " no filial son before the bed of a long illness", in the social and family under the double pressure, if there is a long time at home sick parents, if the economic strength and fragile. Whether to continue to take care of their parents or choose to maintain their own careers and the next generation of tomorrow, this will become the reality of the children can not escape.
Conclusion:Everyone has the day of old age, old age, sickness and death are certain, there are certainties, who can not change, we just need to face it.
Furthermore, relative to the length, the thickness of life is equally important, and efforts to live in the limited years of more fulfilling, more happy is the key.
It's useless to live longer if you have nothing to do every day. So, make every choice you make in your limited time and make the dimension of life a little wider!
Biologically speaking, people can live up to 35 years old, which is the most conducive to evolution, maintaining the natural balance and controlling the population size.
A human is fertile at 15, raise a child until he is 15 so that he is also fertile, exactly 30 years old. Then, have 1-2 more children and raise them. If you don't have children yourself, bring up grandchildren a few years older. Then you can go to hell. When you get older, your productivity declines, your body gets weak and prone to disease, and living is robbing your children and grandchildren of resources.
But people are not pure animals, people beyond the original nature, constantly transforming themselves. Survival environment from the savanna to the plains, from fishing and hunting into farming, and then into civilized society, the development of industry, services, and the construction of cities. At this time, man's physical strength was less important, and intelligence, division of labor and collaboration, communication and exchange became the key. In this way, people need to live longer and longer, and a higher life expectancy is good for humanity.
Here's how it works:
1. Longevity, or living longer, allows one to better gain experience and develop knowledge, which better benefits the species. Older people are more experienced, have more insight, and can handle many difficult problems.
2. Older people have a relatively transcendent status and a more mature mind, which is conducive to resolving conflicts in society and enjoying the rights of mediation, arbitration, and distribution in the family as well as in the community as a whole.
3. It is only with more people living longer that culture can develop to build more complex and sophisticated organizations, form nations, and promote collaboration, thus allowing people to become a true group species.
4. Living longer can lead to the awakening of self-awareness, and one becomes unwilling to die. Then, he has to think about the meaning of life, to build the whole world after death, to form a set of worldview (even if it is very absurd). As a result, this develops religions, makes up myths, and the smartest brains think up philosophies, which then derive a whole host of other things.
5. Individuals need to make a series of efforts in order to achieve longevity, better habits, more advanced medicine, more money, and so on. This is what motivates individuals to pursue success, and objectively drives social progress. If everyone thinks about dying early, how can they struggle and change nature?
。。。。。。
However, nowadays, people generally live quite a long time, and most of the people in the world are adults and elderly, while there are not many newborns. This creates a new problem, the elderly will take up too many resources, and when they are physically unable and need to be taken care of, it will be a great burden to society. (Can't say more about this issue)