Maybe having a lot of casual friends is a good thing.
Sometimes I'll see a post from someone I met years ago, and I'll be enjoying their tidbit of good news, and glad that we haven't lost touch.
And then sometimes I'll see post after post after post of someone I don't even really recall, yet I'm getting daily updates of their lives, and they are taking up a lot of mental space which I could be using to remember to call my mother.
Hi there. Remember me? We were in each other's vicinity a decade ago. The ever loosening definition of friend.