I think sometime in my life I went to a phase wherein I was so into thrash/death/black metal that I would find Linkin Park as one of my guilty pleasures but sure did as people grow up they tend to have a vast interest in every music genre. I think the same thing happened to my brother. In his mid 20's he was into rock that could memorize what happened to bands like Sepultura, Pantera and the likes. Then now in his 30's he's into house music. Things change. Right now, I could listen to One Direction, Augustana then to Major League. Nothing to be ashamed off or guilty by it.