One of the Reasons for windows 8 Is to do away with the need for a hardware Bios. Which is something Google is trying to do with Chromium.
That's all well and good, but you don't need to screw around with a UI that's been working just fine for years in order to do that. Let desktops be desktops and let tablets and portable devices be those things. I'm not abandoning my mouse for touch input anytime soon.