Why is there no Metal genre?

Rock, Alternative Rock, Hard Rock





Five Finger Death Punch, American Head Charge, Atreyu, Papa Roach, Seether, Sevendust, Bullet for My Valentine, Rise Against, 30 Seconds to Mars, (hed) p.e., Crossfade, Godsmack, Nonpoint, Static-X, Coal Chamber, Killswitch Engage, Shadows Fall, Mudvayne, Spineshank, Avenged Sevenfold

To the Pain