I gotta disagree with all of you. I absolutely LOVE Windows 8!
My income has jumped substantially the past two years from businesses who need to replace/upgrade systems and do not want Windows 8. Can't buy a Win7 machine from Best Buy, they come to me to provide Windows 7 systems!
Using Windows 8 is frustrating beyond belief. Things that used to be so simple and used by everyone for years and years, such as taking an item from the start menu and placing a shortcut on the desktop - even I have to find an online tutorial to tell me how to do it. How is a normal user going to figure it out?
And does anyone find the keypad gestures useful? Everyone I know with Windows 8 for the first time were getting blasted with the most random, illogical things happening because of gestures. Just the other day was helping someone set up software on a new Win8 laptop, I'm trying to coordinate between a couple different windows each running a task, and every few seconds I'm mystically transported to a random full-screen metro app. I don't know how I got there, I don't know how to prevent myself from being transported there in the future. It's not reasonable to expect a typical user to be able to deal with that.
For many years computers kept getting easier and easier to use, but suddenly the pendulum has swung back the other way and these new touch interfaces are confusing the heck out of people. In a few years there may finally be a set standard to touch interface layouts and icon pictures, but until a standard layout is agreed upon it's rough.