I hate this idea that if you listen to a certain artist or a certain genre, then you're automatically stupid or brainless. I've got a friend who hates the fact that I listen to pop, hip-hop, rap, R&B, dance, etc. He even hates stuff like soul and blues, and thinks that rock is the only good genre out there. If I get asked by someone else what music I like, he'll butt in and scream about how my music is complete crap. At the end of the day, I listen to music that I like, not what others like. Yes, fans of certain singers might have a certain stereotype around them (e.g. I've seen someone say that the stereotype of Lady Gaga fans is bitchy and obsessive), but you can't say "You like rap, therefore you're probably doing drugs and you'll blow my head off in 10 seconds" because while it may be true for some, it's not true for all.
I like loads of different artists, and I'll listen to them for different reasons. I listen to David Guetta because it's fun to dance to. I listen to Lauryn Hill because I think The Miseducation Of Lauryn Hill is a deep, intricate album which delivers powerful emotion with each song. I listen to Emilie Autumn because her music is generally an excellent insight into a range of themes such as mental health, as well as the fact that she can turn music from beautiful to creepy in a heartbeat. No matter what genre the artist is or why I listen to them, it's whether I enjoy them or not, and I don't see why so much music snobbery goes on when we all listen to music for different reasons.
When I visited Edge Hill for an open day recently, what I found interesting about my course (Music, Media & Sound) was that you have to be tolerant and open-minded with music, and honestly, it's something that I love about the course. Probably sounds a bit of a random anecdote, but it's something I appreciate.