I used to mess about with the lads at work on FB a bit, as we were on the road quite a bit we used to check in at strange places we were passing and post up silly stuff for a laugh, have a bit of banter (then you'd get some distant elderly relative pass a message back via other relatives taking it all seriously as they didn't get the humour), share music etc. but that gets a bit boring after a while and goes off the boil.
But yes, it increasingly just got packed with neurotic crap from people who were either having an apparently fabulous life or used to just post up their latest woes for a bit of sympathy and then never reply to the subject when everyone asked what was wrong…
So I just got a bit fed up with it all, and instead of deleting the account I just stopped logging in. I keep it there so I can keep up with birthdays of people I don't see very often as being a bloke I'm useless at remembering birthdays.
After a few months I really don't miss it one bit and sit there now and wonder why I ever bothered...