I'm using Windows 8 CP, for the majority of web viewing, getting to the desktop is no problem. It works as well, if not better, than any previous version of Windows.
However, I do see Metro as being a serious problem converting it to run on Windows 7/Vista, mainly because these OS's were not designed to run it. It would require a total overhaul of the OS's.
Windows 7 is perfect as is. Those who wants Metro can move forward to Windows 8, those who don't should stick with what they're currently running. I'll probably clean install Windows 8 onto my desktop, but will probably keep Windows 7 on my notebook. On my low-spec desktop, Windows 8 performs a lot better.
No difference on my notebook. Therefore, I'll stick with Windows 7.
Cat