People want the 'perfect' weapon.
They want something that will stop (100%) a seven-foot, 350lb guy on Angel Dust, but not harm or scare a child.
They want a gun that almost kills.
They want a weapon that will put a bad guy in suspended animation, but if he gets it away from them, he can't do the same to them.
IOW, people have been watching WAAAAAAY too much fiction.
Sue