I'm always surprised at how many people want Windows to die. Someone on TheVerge yesterday was saying he wants Windows to die so he can have his choice of OS.
Man, remember back in the early 90s, before Windows and when DOS was just mostly, but not wholly, dominant? There were games I wanted to play that didn't come out for my OS. There was other software that looked cool but was the same.
Then Windows came, and I really can't remember the last time I saw a program I wanted but couldn't run because there wasn't one for my OS.
If Windows died we'd at least have several years of that, if not longer. Not every developer would go multiplatform.
Windows may not be the best choice, but having one dominant OS is actually very, very nice for us as gamers. And, if Linux is your second choice, you can dual boot for just the price of used disk space, not additional dollars, giving you freedom to use the OS you want and the OS that runs everything without spending any money to have both.