I'm probably one of 3 people left in the universe who isn't on Facebook, and if possible, I never intend to be--mostly because it would just feed my already pervasive internet addiction. I would literally spend all my time trying to catch up on the bright, shiny (and often unrealistic) events of other people's lives rather than living out my own.
I know I've probably missed out by not being a part of that community, but seeing which people are willing to keep in touch with me outside of Facebook helps me discern those whose lives I'm meant to be a part of.
I always pray that God will help me discern whom He wants me to be in close contact with, and I always know there's something extra-special about someone who makes the effort to keep in touch via personal contact instead of made-for-the-masses posts on social media.
(No disrespect at all to people who find social media to be the best way to keep in touch--it's just that it's not for me, and I know I've been spared a lot of drama and being dragged into fights by not being part of it.)