I feel 5 shots is enough because I have common sense and every statistic I've ever seen on the subject as well as the hundreds, if not thousands of video footage of actual encounters I've watched indicate that 5 round is almost assuredly sufficient. The potential for it not being so is there, but so is the potential for a higher capacity autoloader malfunctioning, especially in a ECQ scenario, which is much more likely than a high round shoot-out for a civilian.

What are these "real life videos" you've watched where 5 rounds wasn't enough?