Why I deleted Facebook
sivers.org
sivers.org
The friends I caught up with over the years were nice to hear from, but then I realized there was a reason we had drifted apart and there was no reason to wake up sleeping dogs.
Twitter's probably even worse. I signed up for an account, then thought "what the hell am I going to do with this?" and never logged back in. They "closed" my account last year for lack of activity.
But I "get" Reddit. I "get" HN and the other online fora I contribute to. Those actually provide value to me. Facebook & Twitter? Not so much.
Facebook in it's purest form is a Personal Relationship Management platform - you'll keep in touch with friends and associates, be reminded of birthdays, keep up with what your chums are doing without having to ask, plan events, accidentally like your ex's holiday pics from 4 years ago, all that stuff. The topic is less relevant than the people.*
I'd actually be interested in a PRM platform that wasn't inherently evil, but in the absence of interoperability, things like that will only really gain any meaningful value from their ubiquitousness and i don't have the enthusiasm to persuade everybody i know to sign up to a service to see pictures of my cat. It's a pretty good cat too.
*Of course FB advertising, promoted posts, people being terrible and Fake News™ all muddy the waters a bit.