For me music is very important in life, It can do so much to you, it can make your calm or energetic or even aggressive, it really brings an extra feeling to a situation. I listen to almost all kinds of music.
I started to listen to this music when I started playing World of Warcraft. Some friends played these music styles over Ventrilo/Teamspeak(both programs allow you to talk to each other over the internet) They played it while we were fighting the enemy together in the game and it gave some kind of adrenaline boost while listening and playing at the same time. I also got to hear a lot of music through player-made movies (for example movies that you their play style). And that was when I started to really listen to these songs. I even bought my first CD from a band that I only knew of because of a player-mademovie.