I voted for this decade because it has the worst of the worst. Some of my favorite bands are from the late nineties to this decade (like DMB, Modest Mouse, Citizen Cope, State Radio), but the new pop crap that is coming out is soooo terrible that it makes this decade the worst by a mile.
Truthfully, I think music is just getting worse and worse every decade. I dont like the early 60s much, but late sixties is probably the best quality of music out there. Since then, mainstream music has just slowly lost its meaning.