And probably missed all of them. You think I'm going to be standing up-right and in the open?
Meanwhile, that's 5 fewer rounds he can fire at me when the going get rough!
What if you don’t have the option of concealment? Are you going to Annie Oakley while the are throwing lead at you?
For most people who are not familiar with firearms suppressive fire is generally the way to go. Remember the criminals are not usually there to risk their lives for something they believe in; just to steal, or rape in the case of women.
Suppressive fire hopefully will drive the criminal off and when he is retreating the victim can shoot them in the back, much safer.