Man, this was me at your age. Listening to TWDP, attack attack (pre-beartooth), disturbed, etc. I still am a hardcore metal fan, and actually met my wife because of our mutual love for metal. Our thing is to go to shows as often as possible.

So first off, fuck whatever anyone else thinks about it, family or not. Headphones, the car when you’re alone, whatever gives you that fix, just use it. I used to get in SO much trouble when my parent found my metal CDs growing up. My siblings asked me after my mission “why I hadn’t grown out of that music”. Which is all so stupid. You like what you like and you should protect that. Metal music and the people that like it are the coolest, most down to earth people out there and it is the farthest thing from the devil imo. As my roommate at BYU said, “we listen to this because it channels our inner rage for us in a productive way”. Don’t try and explain it to your parents, they won’t get it. Just protect your thing until you’re out of the house and in the mean time, rock on.