No one should really feel ashamed for listening to "uncool" stuff when they were younger. I mean, how active were you in finding music? I wasn't active at all and just listened to the radio when I was in grade school (<3 MC Hammer, C&C Music Factory, Metallica, GnR, and MJ before the black or white single)
All this music made you who you are now and if you like who you are, the music you use to listen to shouldn't get you down or make you feel bad. heh, maybe I'm overthinking this topic.
oh yeah, you guys make me feel old lol