As some one who has used Win 8 as both an end user AND as an IT person, I'm sorry, The Metro UI is just bad, I say the metro UI because all Win 8 is, is Win 7 with the start menu removed and the Metro UI forced down your throat, however, MS decided to remove certain functionality for admins such as myself, as well as moving around files, so I have to go looking for them again.
the Metro UI is useless is you don't have a touch screen. The charm bar has no widget sticking out, to let you KNOW it is there, I remember when I first tried it, I spent about 20 minutes trying to find the damn Power Switch to turn the machine off.
using windows 8 , I literally run everything from the run command now, which is, thank god, still Win + R, seriously, I run everything by command line, because I absolutely HATE the Metro UI.
Every tech person I run into hates using Win 8 and hates supporting it even more, because for what useless things Win 8 adds, it's just more stuff that breaks and interferes with existing programs.
To those saying Win 7 was MS's best OS, I will say it's good, it is the finished product that vista was the buggy Beta of.
However Windows 2000 was the Best OS ever made by MS, so much control at your fingertips, especially server edition AKA 2003, I miss it just thinking about it. Anyway, for any beginner working on PC, 2000 it was easy to understand, was very stable (for Windows), had no stupid popping up features as XP, easier administration than 98, larger variety on used HW and come on, you could play games on them! (I know, on w98 SE too)
and also more importantly, upgrading to Windows 8 pretty much turns your system into a walled garden platform, this critisicism is shared by the likes of Gabe Newell - Valve, Rob Pardo - Blizzard, and Markus Person - Minecraft, who out of protest refuses to make Minecraft work on Win 8.