I'm skipping it so far, but I did install it on my wife's laptop because I had a few free copies. The problem is the "Tile" interface is completely unnecessary on a desktop OS. Tim Cook from Apple recently said it best <paraphrase>: "You'll notice that our mobile and desktop operating systems are optimized for their platforms, but they still interact well together. That's our strength."
Microsoft approached the problem like they were trying to reverse-engineer some kind of alien technology. They crammed a touch interface onto a desktop OS that's proving to be completely worthless. It's not more efficient because it requires more clicks to do common tasks, it's not easier because some features require precise mouse movements (the corner controls drive me crazy with a touchpad), and because the Tile screen is so large it often requires a lot of scrolling to get to the area you want.
My biggest gripe about touch screens on PC's and laptops: I know I have to wipe off the screen of my smartphone on my pantleg every 10 minutes. How the hell are you going to keep the gross streaks off of your laptop screen? Have you seen the Win8 laptops at Best Buy? The screens look like they're smeared with booger-encrusted slime. Gross.