It might just be my area, I know that only a few of my friends really listen to them intentionally. I don't know, maybe people aren't that strongly for or against bands in general.. I've been noticing a lot less true fandom as of late and I don't really know why. I'm hoping that it's because of my luck and there really are still a lot of people that devote themselves to a band or a few.
It seems to me though, that most music fans nowadays are more about sampling downloads of all kinds of bands and not really sticking with one or two for more than a little while. Simply listening to something until something "better" comes along.
Personally, I try to buy the albums of the artists I support and sample downloads with the intent to either buy or ignore the artist I'm sampling.