If you legitimately like an artist or style of music, I won't ever bash that. The thing that makes me angry is when people become mindless lemmings and sell out to whatever fad is gracing the radio.
There is a stigma around white people getting into rap because it's become popular. That's the price of a style of music becoming main stream and more widely appreciated...you can get lumped in with posers.
The worst thing right now is all of these suburban frat boys thinking they are punk or goth because they listen to freakin' Good Charlotte, Simple Plan, AFI, (Insert sell-out glorified pop band here).
Personally, I appreciate any artist in any type of music if they demonstrate originality, depth and talent. I truly love bands that have a message or passion for what they sing about. When you hear a band like that...you can tell the difference.
If you haven't ever heard yourself in a band...you need to find a new one to listen to.