[Perndog]

Randomly slamming into one another may be painful and can't be the smartest thing to do, but it doesn't really look stupid and it at least serves the purposes of 1) energizing people, 2) satisfying aggression.

"Dancing" to hardcore music, on the other hand, is basically just a way to look like a goon. I seriously doubt that looking like a goon makes the music any more enjoyable (as if there were something to build on in the first place).