To comment on what acapella said about people disliking Nirvana because everyone likes him. I think that's true to an extent. Most people that like technical bands like Dream Theatre, for example, dislike Nirvana. Mosyl becaue subconsiously they can't understand why a band like Nirvana and a simplistic style of music like grunge could be so popular where as a great band like Dream Theatre is largely a cult favorite without mass popularity.
I never said I don't listen to Nirvana from time to time... I own the Unplugged album and the Live From The Muddy Banks of The Wishkah (or whatever it is)... I've always thought that there were much better bands out there... and I've always been more of a Pearl Jam fan than a Nirvana fan specifically...
It's all a matter of taste though... just like sooooooo many other topics.