Black metal and my opinion?

hi everybody, here's a thought on black metal and a question. is there
anybody out there that have lisened to Black metal and the moment they
hear it just have to turn it off because it drives them mad and they
all these bands sound the same. i just cant understand what people see
in it, it dosent sound like anything. it sounds tuneless, and i have
something to say about cannabal corpse, ive heard people say they are
the best Death metal band or whatever, but the lyrics dont seem
talented to me. its just a bunch of senseless violence. ive always
liked music that i can relate to or where the artist is letting out an
emotion or saying thier opinions. iv talked to people who like them
bands and when ive said my opinion because they have asked me and they
just get upset and criticize what i like and can anybody give me an
idea of what the reason these kind of groups are about and what thier
message to the world is.
I know my opinion is going to get a bunch of criticism from teenagers
or people that love this style with nothing better to say than, dont
judge before you understand or get more educated on it. but to be
honest ive listened and looked up lyrics because i cant understand
what they say, but i will admit im a very big fan of Demanufacture and
Obselete by fear factory, which i think is on a complete different
level to thart stuff.

thanks for reading.

cheers Dan