I didn't have the kind of HS experience that I care to keep in touch with people. The exceptions, I have kept in touch with.
I didn't either but I'm glad for FB so I could reconnect with people I hadn't even thought about in decades. Most of them are much better adults than they were teenagers.
One guy I knew slightly was this little bitty nerd dude who grew up to be a ridiculous success and crazy handsome, but still intelligent and down to earth - his wife is a hot vivacious redhead who I've become quite good friends with after hanging out with her at a reunion and becoming FB friends. Every time he posts I hope the mean kids from HS who grew up to be mean adults eat their hearts out.
So there's that part of it...
But not just friends....I have a set of cousins who are a generation younger than me - they weren't even born when I left home to go be an adult. I wouldn't keep up with them really except through my mom or aunts, but because of FB I get to be part of their lives. When my cousin's wife finally became pregnant after years of infertility treatments, I got to cry and cheer for her. I get to watch my other cousin's children grow up. When my Auntie gets her nails blinged out for Husker games, I want to see. When my mom's cousin, who I hadn't seen since I was a small child, saw we were in Sarasota he contacted me and we met up in Tampa a few times for dinner and bar crawling and had a blast. My youngest cousin is 17 and plays bass for the city youth symphony and I get to see her performances.
There are a million stories like that, and THAT is what FB is supposed to be about. Not bitching and whining and drama queening and passive-aggressive lashing out, but to connect with humans that mean something to you even if on a small scale. And maybe making that scale bigger.
I mean, I hate to tout FB because they really are dicks, but if you can get some positive out of evil why not....