I think the objective was an all-in-one (or near AIO, obviously with the differences between x86 and ARM and etc.) operating system that could work on near any device (phone, tablet, PC, TV, Car, etc.) - and while the PC might be getting the shaft in this particular rendition of the Windows OS, if I take a step back and think about it for a moment I realize that this move makes sense for the future of MS as a company given the direction of technology today.
What I agree doesn't make sense with more traditional PCs is the fact that they 'removed' the Aero interface. I'm certainly surprised that this wasn't a consideration for some of the 'older' adopters of the new OS. That being said I'm sure there will be a way to get the Aero interface running just fine on Windows 8, either legitimately or not.
Either way I'm going to reserve judgement until I actually use the Windows 8 UI for myself. The difference between touching tiles and using the mouse to interact with the tiles should prove ... interesting, but not phenomenally different such that I'll personally dislike the OS, but for those that do, there's always Windows 7. 7 is going to be around for a lot longer I'd imagine. Games and such should work fine on the OS for at least a few years, if not more.