Welcome Naerys, let us know how you came to find this forum. Also is it just me, or is there an over-representation of heavy metal fans on this site.
I am not one of them, but I wonder if this is true & why this is so?
Several months ago, when I was very confused about what was happening to me, spiritually, I ran a google search about "Quran's scientific miracles debunked" (or something like that). Because I was always hearing people using the argument of "scientific miracles" as proof that Islam is the one true religion. Well, after reading a few articles I stumbled upon a very interesting thread on this very forum regarding that subject. When I saw the forum's title, though, I thought "woah, wait a minute! I'm not ready for that ex-muslim label!" and I fled. But a few months after that I came back and started reading it regularly and here I am

As for the heavy metal thing, I'd say that the very core of the music is anti-'establishment' and anti-religious. I don't just mean the satanist, evil corpse-paint wearing black metal bands. It's the essence of the music ever since its beginning. The message happens to be anti-christian because the bands come from a christian background. For ten years I used to just brush it aside, saying it didn't concern me and I just love the music, but it really make you think. I'd say that it has had a great impact on me and what I have become (though that could be indirectly, but I'll explain that later). I think it's rather funny yet tragic that metalheads where I live support this ideology thinking it's purely aesthetics, and yet claim to be good muslims in spite of it. But hey, I've been there...