It's all in your own opinions and tastes. If someone acts like their music is superior, they feel that way about all of their choices. It's just like the Xbox vs PS3 debate, Sega vs Nintendo, Star Wars vs Star Trek. People that feel their choice is the only choice will always be there to voice that you're the one thats wrong, even if you haven't tried to assert that in the first place.
I love country music. I know I'm in minority here, but I started out with that and still quite enjoy it. I've never been one to "conform" with music. If someone likes something I don't, then I just ignore it. I'm not gonna change my musical tastes just because someone else thinks thiers is superior. If you like it and enjoy it, what does it matter to someone else?
My friend has (imo) terrible taste in movies and will watch anything, and like anything, so long as it's happy. He hated The Road because it was a sad movie, and adores the most horrible drivel the romantic comedy crowd has to offer. I'll tell him that he has terrible taste in movies and try to show him movies that I consider to be classics or great, and I might make fun of him for his taste, but I don't try to change it or make it like mine is superior for some reason.
Also, as for my taste in music, it's almost anything. I prefer to avoid most rap, pop, hip hop, and like heavy grunge metal, but so long as I think it sounds good, I'll listen to it. I ADORE sad songs, and story songs (which country is full of.) A few years ago, I'd say that country was my favorite, but now I don't really have a favorite and have anything from J-rock to Orchestral music on my ipod.