I've used every Windows operating system since Windows 95 and honestly Windows ME easily tops the list for worst operating system. Windows 8 isn't bad but it's just not made for a PC. I don't want transitioning screens when I'm trying to run multiple things on my PC, I want to be able to easily have things pop up and down from the task bar. Also I happen to be one of those people who don't like things on multiple pages, I liked having all my programs on one long list.
You can install on a regular old desktop, it works kind of the same except you can't slide things around with your hand, you need to drag the slide bar at the bottom of the screen with your mouse.