I love all forms of music - rock, disco, rap, classical, jazz, ambient, dance - whatever.
Music is completely personal and has been said many times before, for each person there's only good music ... and bad music.
In terms of rock, if someone said I was a snob because I love Steely Dan, Joni Mitchell, The Doobie Brothers, Yes, Deep Purple, The Beatles, The Stones, Free, Pink Floyd, Radiohead, Led Zepellin etc then I'm a firm snob! But I also am partial to Def Leppard, Bon Jovi, Bread as well.
I do think it's absolutely personal though and if you love the music, just love it! I'm just as happy listening to Steely Dan, Chic, Beethoven, Global Communication, Michael Stearns, Public Enemy, David Guetta as anything else - it depends on the mood :)