Why does the old man suddenly love to recall the past?

In real life, old people always like to tell others about their previous heroic deeds. They will be immersed in the acceleration of the past and think that the past is better than the present. Psychologists call this phenomenon "regression psychology".

Old people's nostalgia is related to their own values. If their present life can't reflect their own values, they will indulge in past memories and entertain themselves.

People are old, don't like sports, have had enough hobbies, and their eyes and body parts are not as flexible as before. There is nothing to be busy at this time, just thinking about the good memories of the past. They spend most of their lives talking about the past with friends or children. Because they are forgetful at this age, they have repeatedly said that this must be the emotional sustenance of the old people.