The only way I would be fine with Windows 8 is if there would be a way to completely deactivate Metro or at least make it so that you won't notice it much (add a start menu!) and some sort of promise that the traditional Desktop won't get deprecated for at least ten years.
the metro desktop is where the money is. Microsoft can make money thru people's daily use of their ddetects gestures would replace the need to touch the displayesktop apps. Why you need touch to make a tiled desktop work is something I do not understand. Maybe a keyboard that detects gestures would make a desktop metro more useable.