I think you guys are underestimating the numbers of Win 8 users.
They number in the tens of millions now, and the operating system is probably closing in on 10% of the market by now. Granted, many are using Start8 or Classic Shell or Start is Back, but Win 8 is here to stay. And you should expect Win 9 to follow its path...it won't look even remotely like Win 7.
Microsoft needs a strong presence in mobile devices, and for better or worse, Win 8/8.1 is their mainstream development in those lines.
At least for now we can adjust the way this operating system works, and concentrate on its desktop capabilities if we so wish. And it does shine there...I've found it to be fast, stable and no effort to use once I've set it to my preferences.
I wonder if we'll be able to say the same about future operating systems from Microsoft though.