[austinjp]

Erm.... I've literally seen fights start and end with one headbutt.

I'd suggest there's a bit of us all "talking past reach other".

I have no doubt that anyone who thinks they can end a fight by a headbutt, finger break, or groin kick without learning to trade punches and kicks and to grapple, would be in serious trouble. I'd also say that anyone training only sporting, rule-governed elements of fighting is in a great position compared to someone who has zero experience, but will encounter some very unexpected situations when a bar brawl kicks off.

So how about this: we're all right and wrong in some measures, depending on the context? :)

(Edit: typo)