Windows 8 is also a desktop PC operating system that had a "release preview", right? Aren't we talking about a mobile operating system "infiltrating" the desktop OS? The skeuomorphism from iOS to OS X is subtle compared to what Microsoft has done.Funny, I bet you haven't even used both the platforms you just mentioned. Of course naturally I anticipate you'll state otherwise. If you truly tested a Windows 8 OS on MS's demo device they passed out during one of their recent developer's conference, I ask you to read out your serial # of your device. Otherwise all you did was test out their CP (consumer preview) version.
As far as dropping familiar features in favor of something new / something that is better -- What problem is Windows 8, for the desktop, solving?