I've been using linux for like six or seven years I think? I don't even have windows on any of my computers anymore. Now that firefox (and more recently/importantly, flash) works basically the same as windows and I don't play games as much anymore I really don't want to deal with reinstalling windows every time it breaks itself.

slackware -> gentoo -> ubuntu.

I got PokerStars working fine in ubuntu running under WINE and I even got PokerTracker to run. I'm afraid to buy PokerTracker though because I don't know if I could get it to work again on another computer if this one breaks and I really really don't want another app making me use windows again.