Seriously, what is the problem? I've been using Win8 CP since about a week or two after it became available, and honestly, aside from a driver issue with my girlfriend's [six- or seven-year-old printer], the only issue I've noticed is something about desktop gadgets that pops up just about every time I log in. I'm guessing it's related to the Norton Internet Security gadget, but that doesn't really matter to me anyway, as I don't use it. Oh, and the wallpapers that are supposed to change... don't. Beyond that, I have had ZERO problem with Windows 8 - AND THIS IS JUST THE CONSUMER PREVIEW!
I mean, yeah, if you don't have a REASON to upgrade, then DON'T; it's literally THAT SIMPLE. If you're buying a new computer, though, or you need to install a new OS for whatever reason, wtf is really the problem? So you've got Metro now instead of a Start button? Guess what! You can just click where the Start button used to be, in order to switch between Metro and the desktop! Something you wanna run isn't pinned to the Metro screen? Right-click and select "All Apps"!
From my experience, Windows 8 looks to be leaner and faster than Windows 7 (and THAT'S saying something!), and so far, it doesn't look like it's going to be the driver nightmare that Vista was. Admittedly, the only games I play much nowadays are Star Wars: The Old Republic, World of Warcraft, sometimes Diablo III, and I just reinstalled The Sims 3 for some reason, but I can't imagine there's going to be anything you can't play on Windows 8 that you COULD play on Windows 7.
Now, if Micro$oft DOES make moves to try to keep services like Steam and Origin at bay... well, it's Micro$oft, so is it really a surprise to anyone? Do what everyone else does, and take 'em to court. Beyond that, all it amounts to in my book is rich guys fighting other rich guys for the rights to the ease of taking money from our pockets. ::shrug::