Never had/used/remember ME, i just went with other because windows 7 is pretty bad....on desktops.
Me was a failed attempt at something awesome. They basically tried to add features that were in XP/2000 to 98. In a way, Windows 7 is to Vista as ME is to 98, except 7 is actually good. Also, I'd say Win98 first edition gives ME a run for its money...that was pretty bad.
Vista had a bad launch...that's all. It may have some quirks that not everyone likes, namely the overprotective UAC, but now that it's matured a bit it's actually quite good. It's no Windows 7, but still, it's definitely not bad.
The worst has got to be one of those poorly-supported underground linux distributions that elitists worship because they have no features and are impossible for an average person to use. (They call it "lightweight".)
Seriously...who actually enjoys navigating with the command line?
I quite like command line, i like learning how it works and getting having the potential to do things quicker if I want to.