It stopped him didn't it? Put him right on the ground. Remember you shoot to stop, not to kill. Of course enough force to stop has a good chance of punching his ticket permanently, but that's his problem.
Of course. It's a given that we never shoot until there is a deadly threat and stop as soon as that threat is ended. But I train with double taps, and if the threat is still there (standing) double tap again, and again, and once again if needed.
I normally have 26 rounds available to me as I'm out & about day or night, and I surly don't wish for it, I wouldn't hesitate using them if I need to.
What's your family's life worth, one round or two?