"Don't use Metro if you don't wan to" oh yeah, how? Unless its pinned to your Taskbar, you are going to metro. Some settings, takes you to metro. Some default files, takes you to metro. Charms are stupid on the desktop. The pop up when you DON'T want them and they don't show up when YOU DO!
"Live tiles are powerful / Gadgets removed from Win7 and Win8" - great, the good ones are useful on the desktop. Live tiles are USELESS since you cannot SEE THEM in desktop mode! DUH, STUPID! And when you are in a metro APP, you still cannot see the LIVE TILES! Hence, they are useless for a desktop computer.
3rd: A tablet / Phone is a media consuming device. I look up movie info, GPS info, take photos, make phone calls, browse the net with these devices. A COMPUTER is not needed for such things... hence, a full-retard OS is NOT needed for the Desktop/Notebook computer, what idiots!
My mother can't deal with computers, its sad and stupid and people older than her can. The only thing I can get her to use sometimes is the iPad. The interface works easy for such users. This won't improve the desktop experience. Both Apple and Google have said their research has already shown that it would be a BAD idea.
Keep in mind, the WP8 devices will be running a version of WART, the NT kernal/OS on a phone?! Wow, just the sort of thing a phone needs!
Microsoft goons talk about "the excitement" of Windows 8 as they hype up the turd. This WILL be exciting! I want and hope MS experiences the full force of glorious failure. It will be such a turn off, they may never recover. We lose confidence in their ability to make their own OS... and move on. Hopefully some it not many of their customers stick on ChromeOS onto computers, they might as well. ChromeOS will run on just about anything... and its free.