Maybe for you seasoned old Mac users who came from OS 9 the aqua seems horrible. But when I first started looking a Mac OS X, the interface was something I immidiately fell in love with. The beautiful colors and textures where a welcome enhancement to the slop and blah of windows. I think they are loosing that by moving to a generic, less accentuate look.
You see, I came on board with Apple when OS X was in full swing. So seeing them demolish the interface that brought me in is very dissapointing. While windows seems to be stuborn with it's styles and appearances from the 90s, Apple was moving on to more bold, modern styles. It was really ostentatious of OS X's superior technology to have an advanced, more modern look to match the technology in the OS.