It's mental.
My parents have recently got themselves a Win8 PC. Usually I sort out the bugs and setup stuff for them but I'm totally lost on the Win8 interface. I can't figure out to do the most basic things on it, that I'd take for granted on Win7.
I think Microsoft were still light-headed from actually getting Win7 to be better than XP and not a disaster like Vista and thought they could afford to get arrogant again. I'll wait for Win9 aka Windows: The Hubris Edition.