Ubuntu users who were Unity skeptics didn't flock to GUbuntu, they flocked to Mint.
Well, I tried Mint when the Unity thing happened, but the whole, "google needs to pay us or we'll remove it from the list of default search engines in our version of Firefox" thing bothered me on a philosophical level (I know I could and I did manually add it, but they were trying to charge money to stop them from removing a feature instead of charging money to add a feature, and that rubs me the wrong way) and I immediately returned to Ubuntu. Not GUbuntu, but not unity either. You can always just apt-get gnome, which I did, after trying KDE4 and thinking it was even worse.
At the time Gnome3 was much worse than it is now, but now it can be customizable to the point that I prefer it to Gnome2 and the alternatives that try to emulate Gnome2. And if you don't agree, you could always apt-get MATE.
People freak out over Unity and whatever else, but those are just default options. Install whatever window manager you want.