Well, this thread is all over the place.
Anyway, congrats on your rejection of M$'s control. 🙂
As for the game thing, that's not an issue either. Some games (Like Quake 3, RTCW, Unreal Tournament, Tribes 2, and others) are either released for or get ported to Linux, while many others, like Counter Strike, can run with the use of things like Wine.
Right now, I only have one computer still running Windows, and I avoid using it whenever possible. When you've been using Linux for 3 months, like I have, you actually begin to feel restricted by Windows. The only reason I'm still running it is because my 802.11b adapter is Windows-only. :|
You'll also soon find the many hundreds of games for Linux that will never be released for Windows, many of which are really, really fun.