Is it better to be healthy for a long time or forever?

Health means good. Suppose health can last for a long time, such as thirty years. Thirty years later, I am old and weak. Forever, a lifetime of health. But people will be old, weak and die one day. Forever, every day People don't live long. I have to say, I want to live for a long time, that is, all my life. Permanent health can only be assumed. Even anyone will get sick.