it is a must, but not everyone succeeds in preparing for their old age, at least they have the younger generation to support their lives, namely their children. because I have heard that some people work hard for old age also does not guarantee they will be comfortable because money continues to inflate. I don't know how they actually prepared it. do they just think about piling up without thinking it will be eroded every time. i advise to save in gold.
Preparing for old age is something that must be thought about and must be done. But as you said not everyone can do that successfully. Sometimes what happens is not in accordance with the expectations we want because of things that are not planned.
But that should not make us give up, and try to live life without any purpose. We have to do hard work in order to realize the old age we want. Because we don't only think about ourselves, but of course we will have a small family that must also be happy and we guarantee its welfare.