I use it mostly to keep up on with the lives of my sister's children and am happy to say it appears they're pretty much all doing quite well in life. I've watched them go through high school college, have families, I get to see the births of babies. They always reach out to let me know if there's a new baby on the horizon. My favorite nephew always lets me know, directly, what changes in life he's going through, if not by phone then by PM on FB.
I have a short Friend list as I rarely friend people who I'm not personally connected to on a real friendship level. For a while I was friends with my, former, one true love, but, had to unfriend him as I just couldn't stand getting updates on his day to day life even though he rarely ever post, still, it was just too weird after a while knowing things I didn't want to be privy to. I have to say, he is still as handsome as ever and in great physical form.

I am still FB friends with another ex, but we are still very good friends in life anyway and talk on the phone ever so often as well, not romantically, just very good, it seems forever friends.
I enjoy seeing what some of my friends are up to, most aren't obsessive with the pictures and posting of their activities and those who were, were un-followed instantly. I do participate in a few groups like TWD TV show fan groups and a couple of other types of groups like, Hands Across America. Over all the experiences have been good. Except when I had to change my account when someone hijacked my old one, but that was quite a few years ago.