A good, vital zone shot will usually take the fight out of your opponent. When he decided to attack you, he probably thought that you were an easy target. If he is surprised by your ability, he may give up. When you watch a cowboy movie or Dirty Harry, you'll notice that the heroes never use cover. Those actors are not really going to die if they get hit.
Real humans do.
It is foolish to stand in the open while bullets are flying. Clint Eastwood is bulletproof, we're not. If you're shooting, it's to stop a deadly attack. Do not stop firing until the assailant's ability to hurt you or others has ended. Don't fire to wound or kill.