These people were probably never attached to Disney as a child. If you recall, especially in our peer group (I'm 24, so I'll assume I can call us "peers"): you were wither a Disney fan --or-- a WB (Looney Toons) fan. I'm not saying you couldn't like both, but it was one or the other that you loved.
Also, many people fall into "adult life" and completely abandon all of their childhood dreams and beliefs. That is what society tell us to do afterall. These people grow up to be miserable. Little things like Disney will help keep me young, happy, confident, and ambitious!
My thoughts are that if you weren't a huge fan of Disney and had never visited a disney park as a child, you probably won't care too much when you're older. That's just how it works. It's those of us who experienced the magic at a young age who help to keep the magic alive in future generations.
As for these difficult people among the college scene: they haven't realized what life is about yet. They're still living in HS mode where putting others down for things they really don't (and shouldn't) care about makes them feel cool. That's a problem. Most people outgrow it in time... College life is all about learning that most people really don't pay attention to those minute details which your life may have depended on in HS.
I went off on a tangent, but I only mean to explain that you shouldn't let it get you down and you're not alone. If you ever think about doing the College Program, you'll understand just how many young people truly love Disney and want to be a part of it.
So, next time someone says something, simply reply, "You were a Looney Tunes kid, weren't you?" ;-)