I know a cop who had to shoot a guy with his .45. He hit the guy in the arm which spun him around....twice. Then the arm literally fell off. The guy gave up right there.
He also read about a cop the next town over who shot a crackhead 97 times with his 9mm, in the head, and the guy still stabbed him. Poor guy.....
The fact is that 9mm only makes badguys angry, while the .45 is basically a death ray.