but we only have a limited time so if buying something from your childhood makes you happy, do it.
I don't think that will help. Buying seldom buys happiness to start with, but childhood happiness?
Children are not happy if they have the most expensive toys, and that is also true for grown ups. What you try to buy are feelings "in the background", but feelings you can't buy.
Maybe even more important is that the biggest part of why children's days seem to be so happy is because there were no worries.
Of course there were, but a bad mark in school? It all seems so small compared to grown-up problems, if we remember at all.
But again, buying stuff does not exchange the big for a small worry.
Also children live in the here and now, while we always think of what could happen, or even worse, what could have happened. Why relive the hurtful yesterday again and again?
I agree. Buying the things you want or had from your childhood will never fill that longstanding void, but it might in the short term make you happy for a few moments. There were definitely bad times of being a child but for people like me, the adult world just seems joyless. A lot of it is frame of mind, but there is a bit of truth to it as well, in my opinion. I think we want to relive the past because in a way its familiar and things are always better in hindsight.