Let's suppose someone wants to kill you.  Face to face.  Perhaps it's just a crazed assassin with free time on his hands and is determined  that you will die for practice and to keep him at the top of his game.  You, on the other hand should be just as determined to live.  Give him a kick to his vitals, never mind that you were told kicking was for girls, you need to grab his gun then you aim and shoot his dick right the hell off.  You win.