Now theres a mans sport. I'd like to see a top NFL'er switch over to rugby, he would probably go home crying to his momma after discovering he can't wear much protective gear.
The answer to this question lies in the NFL Career of Darren Bennett
Darren Bennett is only a punter in the NFL. The speed and power that these men possess would kill someone without protective gear. The gear makes the game even more violent by providing a false sense of security.