I agree with this sentiment so much. I know it's a trendy HN thing to hate Facebook, but I seriously feel like the company lacks maturity and moral integrity and that's why I don't have one.
It's too bad since I was at first really excited about the idea of Let's Be Amigos, as it purports to solve a problem I've been having lately, but immediately my attitude did a 180. Facebook is not going to be a good resource to mine interests for people that don't have one.