This is why I find the whole "real men can fight" attitude to be so retarded. Violence is banalized so much in our society that people forget/don't realized that a fight can end really badly. Better avoid it if you can avoid it.
On another hand, if for some reason you get attacked and you can no longer avoid a fight, then throw a good kick in the balls(if it's a guy of course). The idea that kicking a guys balls is unfair is total horse crap, in fact, if you legitimately got to this point, it's making him a favor. Nobody has ever died from a kick in the nuts, contrarely to a hit to the head or a bunch in the belly.