metalheads have hard heads

today I had the pleasure of having my youtube comment on a Anorexia Nervosa video replied to by some metalhead, on my comment I stated that if you liked Anorexia Nervosa you might like the band blood stain child, the reply was no one who listens to black metal would possibly listen to a trance metal band like BSC. witch sorta annoyed me.. allot, why is it that metalheads like one type of metal but hate every other type of metal? if your a metalhead shouldn't you like METAL? not thrash metal or black metal or metalcore, why cant you just like metal in general? anyways thats just what was bothering me today. have a nice day everyone