Unity is used by one (1) distribution. If you don't like it, switch to a different one. I did; it isn't hard.
The problem is that the other distros are switching to Gnome 3, which sucks just as much but in slightly different ways.
whats so bad abt Gnome3?
"Just think, with VLSI we can have 100 ENIACS on a chip!" -- Alan Perlis