Have had the same happen to me. I desided to not limit myself when it comes to music. In my teens and forth i was black metal only(and the big ones as Slayer, Death etc) where there was a childish look upon other genres within and outside of the metal genre. As i got older i started respecting the diffrent genres for what they are and found loads of new music i had overlooked in the past. That said, i also understand why people stick to their genres. But alot of disagreements posted on this and other forums just makes me laugh. There still is something called "narrowminded".
Not to make this thread what its not, song kicking my lovely gentlemans buttocks.