This. If your friends would mock your taste in music, get more adult friends. Although I'll admit that I've done it, and I'll bet pretty much everyone else has. My own music collection has opera, metal, pop, country, folk. I have albums by Abba, Twain, Dido, Black Sabbath (several), Lana del Ray, The Cranberries, Portishead, Radiohead, Metallica, Sandy Denny, the Cowboy Junkies (all of them), Led Zeppelin, Deep Purple (OK, most of my metal is old, and not especially hardcore). I have a couple by Madonna somewhere. No music is good because of what type it is, and none is bad for that reason either.