Why not? There's an old phrase called "fight fire with fire". Even the U.S. build nukes as a deterrent. As crazy as it may, but if a mass shooter strapped with an AK or AR, a deuce deuce pistol isn't going to defend you. Welcome to this crazy world.
They're not good for hunting. They're for killing humans in a battlefield situation. My son and I have guns, but do not want assault rifles around anywhere. Especially with all the violence on TV and video games. Evil combination.