Hand guns have no other design criterion than to kill human brings at close range. They work best if you can look into the victim's eyes.With a gun you can stop many hearts all at once, and from a distance - which is demonstrated almost daily. Guns have no purpose other than to kill, to threaten with death or for sport. Anything that can be done to restrict their use to sport and the killing of animals - for food or in defense - improves public safety.
... not for bear hunting.