I don't know a single desktop user (e.g. Architects, Engineers running AutoCAD, Solid Works, etc.) that doesn't break into profanity when this subject comes up.
Add accountants and freelance writers to that list. I'm using Windows 7 on my desktop and laptop, my wife has 8 on hers. I can't use it and it completely crashed about a month after we got it. I spent days restoring stuff from the backup I had on the desktop. I now have both computers on Carbonite (I transfer new stuff from my laptop to desktop right away).
I think Microsoft is engaging in what used to be called "planned obsolesence," they have to sell new product every couple of years to stay in business. I was happy with XP, I will fight going to 8 as long as possible.