I have gone cold turkey from Facebook, after years of checking/updating multiple times a day. And it wasn't hard, because I just realized that I wasn't interested in the lives of the 80% "acquantainces" any more. The fact that somebody I knew at some point got married is really not important to me (and my "Like" doesn't mean much to them). And I feel that if I need to contact a friend after a long time, it is rather easy to pick up where you left off.