Funny stuff, yet pitiable too. I try to have a philosophical discussion about different metal genres and the people that like them, and then instead get accused of being "pretentious" and "stupid".
Look, son, I know there may be a typical stereotype floating around out there of metalheads as being mindless, drugged-up/drunk violence-prone freaks without an intelligent bone in their bodies, but in your case it's obviously reality and not a stereotype anymore (mainly the mindless part, that is).
People should be able to discuss metal on these forums in more intelligent terms than "Fuck yeah" without being flamed as being "pretentious", because some people do actually have more than half a brain, you know?
You already admitted that you are incapable of contributing to the philosophical discussion of metal at hand, but rather resorted to some childish flaming instead, but there is a silver lining here: like they say, admitting you have a problem is the first step to improvement...