Windows 8 is terrible for desktops imo. Doing the most simple tasks took a lot more time than on Windows 7. The Windows store is also terrible, since the vast majority of apps are just

By just using the computer you really feel like it was designed to be used on a touchscreen, not a mouse. Also, my FPS in games was worse than on Windows 7, although still not terribly bad. The only thing I liked was that it was pretty.
After like a year with Windows 8, I switched back to Windows 7 and I missed it too much. Games were faster and everything was fast and easy to access. I went back to W8 when 8.1 was released and I decided that I still hated it, so I formated and went back to Windows 7. I really wanted to like it, but besides the fancyness it's a downgrade from W7.