I played off and on a few years or so ago, but just haven't had time.
I love math and teach some statistics courses, so I'm all about the numbers game... perhaps too much. I'm the one calculating that after the flop I have an approximately 27% chance to get the cards I feel I need to win the hand, and thus I usually bet accordingly. In smaller, "friendly" tourny style games ($20-30 with 8-20 people played at someone's house) I was cleaning up pretty well, never finished out of the money and usually came in 1st... but I have no illusions about this, I completely expect that if I hit the tables with "real" players, I'd probably hit a ton of snags (maybe I'm too readable, maybe I can't read other people, etc).
Anyway, I like it because I'm hypercompetitive, and because it deals with numbers and probabilities which I love. I hope someday to try it out again, although it might be in an online forum, where I might have to worry less about reading other players and getting read myself (although you can, of course, still read people's playing styles by following their bets), because that might give my style a better chance at winning... but I did really enjoy playing in a large group of people, it really adds to the fun and stress.
My brother, however, started before me and still plays pretty avidly (online and in person), although I haven't asked how well he's been doing recently.