Metro is nothing like previous iterations of touch Windows. Windows RT (i.e. the variant of Windows 8 that runs on ARM-based computers) doesn't have a desktop mode at all. All Metro, all the time. Win32 doesn't even exist on Windows RT.
If you've got a spare machine of reasonable spec, and there's Windows in your personal or professional future, I strongly recommend grabbing the release preview from Microsoft's site and installing it.
The times they are a-changin'.
My personal take?
Good! I was getting bored of the existing desktop paradigm.
Even if Metro turns out to be a big steaming pile, at least MS tried to move the game on.