Well, GUI-related arguments are necessarily subjective.
The fact is that I had a setup I was reasonably happy with (Gnome 2) for several years, and had it yanked from under me and replaced by something I neither like out of the box (in fact, couldn't even /figure out/ out of the box -- Gnome 3 gets a huge FAIL for discoverability) nor can configure into something resembling my old setup (unless I want to dig through an alphabetically-sorted pile of "extensions" with mostly unobvious names and unknown quality -- why thank you very much!). I like change when the change solves a problem. I had no problem with Gnome 2.
Examples? How about this waste of space on the bottom of my wide^Wshort screen? Why is it there? How do I get rid of it? How about not grabbing "Alt-Tab" (which I actually use in Emacs -- I prefer window-management shortcuts to use the otherwise-useless "Windows" modifier key)? Can I make the top thing (I understand it's not called "panel" anymore) be vertical? Or at least make it auto-hide? That's just off the top of my head, and do realize that in the presence of other options (which is not something you Gnome people can change, thank god) those problems are deal-breakers.
I'm not saying Gnome 3 is unworkable for me -- it may well be workable, but the fact that I'd have to spend significant effort to make it usable is irritating, and the additional fact that there are other options means that you a) lost a user and b) that lost user has moved on with whatever opinion of your work he had formed on the initial encounter.
I'd shut up if I thought I'm some sort of OCD-afflicted weirdo, but I know for a fact that I'm not: there are a lot of us, see. And we'll stay with those initial opinions. Deal.
You made your own bed, guys, now please stop whinging about your users "not liking change".
(Also, keep coming up with New Revolutionary Visions every 2 months and the CADT impression of you will only get stronger.)