Point shooting

[Straw Man]

1. At close range, it's very useful.

I've done it in classes as a drill, where you're required to fire five or ten rounds rapidly into a silhouette target at a distance of five to seven feet. At those distances, sights are superfluous. It's possible to get acceptable accuracy just by extending your arm to the target. This would cover many, but not all, likely self-defense scenarios.