First off, if someone disgree's with you about your taste in music, and it actually hurts your feelings, you should really get some help with your insecurity issues.
Secondly, if you don't like someone based on their taste in music, that doesnt make you an elitist, it makes you an asshole.
Music Elitests are my favorite people in the world, because they are passionate and opinioned about the thing that I am most passionate and opinionated about - music.
Trying to hold a conversation or discussion about music with someone who isnt as passionate about the subject is boring, a waste of time, and waste of braincells. I love being able to discuss/rant/argue/laugh with someone how they suck cause they listen to phish, about how I suck cause I listen to mindless self indulgence, about how we both suck cause we listen to the scissor sisters, but are both infinitely rad cause we listen to Andrew Bird.
Music Elitists are just more interesting. The elitists have usually been music fans for a long time, and they have lots of interesting stories and interesting records and interesting hair to discuss. It's fun to brag about how you've been listening to Obscuro Band #54764567 for a billion years, and now they're playing on The OC.
The fact of the matter is, *IN GENERAL*, you can usually tell who the musical "newbies" are, based on what they listen to (or post about on the inner nets). The people who are all "OMG I love Green Day," or xGxCx, or Ja Rule or Cradle of Filth or Paul Oakenfold or Louis XIV are usually new to the genre, and/or music in general. It's not your fault that you havent been around long enough to be exposed to some of the better stuff, and trust us, eventually you will become exposed to more and more better music, and you will eventually look back, with fondness, and say "Yeah, Green Day does suck. But I sure do still love Kerplunk." (I think I just dated myself with that statement).
The great thing about this board is that its full of elitists, but without most of the pretentious assholishness of some of the other boards/sites Ive been too. So please, continue beling elitist. Keep on telling me that At The Drive In sucked, and I'll keep telling you that The Arcade Fire is the second worst band ever, behind only The Flaming Lips, and hopefully I'll find another record as great as the Iron & Wine albums, and maybe you'll fall in love with Tristan Prettyman.