I'm just not that into Facebook, and I doubt that will change. I read recently that the fastest-growing age demographic on Facebook is women over 55 -- not my tribe. I've known a few people who have become fixated on Facebook, downright addicted to it. YES, I use it; YES, I get it -- but it's not MY killer app.
I'm glad we still have freedom of choice! That said, I can see the writing on the wall: a couple of years from now, Facebook login integration's going to be the hot-hot thing; you'll be able to log into countless other sites using your Facebook credentials -- and naturally, Facebook will have access to all that intel on your preferences and interests.
I know we're moving toward a Big Brother world -- a lot faster than many people would want to think -- but I'd rather have a bit more payoff than what you get from Facebook! Cute kids, cute kittens, drunken college students and personal diatribes are not things I like spending my time on.
I keep my hand in, but other than a brief stint playing Mafia Wars when it was brand new (um, and probably when the effects of the Zucker-Coffee was the strongest), I spend more time on LinkedIn because I think the discussions are more interesting.
So, please don't ask to Friend me on Facebook -- but by all means connect with me on LinkedIn!