Nostalgia has become a habit, especially in social media..
Nothing basically wrong in feeling good about what it used to be, years ago..
But trying to superimpose those experiences on the current moment is just inflicting misery..at least on others.
To remember a nursery rhyme I sang at the age of six with warmth is indeed pleasing( for myself, definitely), and maybe, if I mention that to a few close friends just once, it may produce the same warmth, (almost)...
But if I repeat it at sixty, dancing, singing and making actions, over and over,
I may be able to enjoy it,
But what about my family and friends and the world at large?