Well at least I have an idea of what you're going at, the reason why I like Metalcore/Mathcore is because well....in my really young years I listened to a lot of Pop Punk, which had lead me over to Post-Punk and Hardcore Punk when I was older, so it would make sense that I'd move onto Metalcore/Mathcore when I was getting into the heavier stuff since that stuff has a bit of a background influence from Punk, so basically it's just the sound that I've been used to all my life. As for Black Metal, I have no idea how I got into that stuff, I guess I just listened to it and surprisingly liked the sound of it. Sludge Metal kind of has a background from Hardcore vocals so that's kind of how I was able to get into that stuff, and the same thing goes for Post-Metal. Though anyways I'm excited for the new Norma Jean album
Also posting some Alcest here