I love it when people (who never fought in a fight) suggest that guys like Brock (who have won many fights in the UFC) are somehow afraid to fight.
Couldn't agree more. Being a professional fighter is a unique way to live life for those fortunate to make a career out of it. I can't relate but I have plenty of friends who have career ambitions as mixed martial artists, hopeful to be noticed by the UFC, Strikforce, whatever. Fighting in local circuit venues, etc.
It's easy for people outside that circle to be judgmental. None of these fighters are afraid to fight. It's what they do to earn a paycheck.(if they're full-time)