FB is a convenient way to keep up with family and friends, especially the ones that I haven't seen in a while or don't see regularly. Yeah, I could certainly call, text, email, write a letter, page, carrier pigeon, etc. I do with my closer friends and family. It is what it is, which for me is a way to keep in touch with people. Yeah, I am "friends" with folks who have what I think are assbackwards ways of thinking, and they probably think the same about me.
I just don't see why folks get so bent from stuff on FB. It's a window in what's happening in life in general. Same can be said for internet forums. The internet does provide an opportunity to express oneself without fear of reprisal. That leads to: