Dark One
The Tainted Dogma
Nothing wrong at all with headbanging, it's a great way to get out your energy without being too intrusive on those around you. It's only when those with long hair start whipping it in peoples' faces that it gets truly annoying. If those with really long hair headbang in an up and down motion rather than the windmill motion, it almost always solves the problem.
Other than that, 'til you drop.
Other than that, 'til you drop.