RE: Right tool for the job
Having installed Windows 3.11, 95, 98se, 2000 and XP I don't know where you get the "easy to install" bit from -- on all versions I've had to install device drivers after install to get things working correctly. On the other hand, I've managed to install Fedora, Mandriver, Suse and Ubuntu on a laptop and desktop and it's just worked.
My point about DirectX is that it's an M$ marketing tool, pure and simple, and is not actually needed -- decent games companies would write games that are cross-platform (the Unreal Tournament series are an example). Gaming is starting to take off on Linux, I know of a few hardcore gamers starting to take the plunge.
In fact, the only people I know who aren't considering Linux, and say it's too hard to use, are Windows "power users" -- most of whom (not all) are proud of their non-transferable "IT skills" they picked up on Windows.
Nobody is trying to force you to use Linux though -- I'm not sure the same can be said of Windows. ;~)