Other than killing, what other purpose is a gun used? It is a killing machine. Period. It's asinine to allow guns into the hands of people, who should not be given the power of life/death. It also asinine to allow a fixation on weapons to out weigh the rights of all citizens to be free from gun violence.
I agree with you 100%. A gun's main purpose IS killing. If it wasn't, it would be useless for self defense & I wouldn't bother learning how to use one or owning one. What else can put an elderly person on par with a young thug who intends to hurt or kill them? And what else can enable anyone to defend themselves again an armed attacker? Why do you suppose police officers have such "Killing machines?"
When you need help, the first person you call is a police officer - a person who has a gun.....a "killing machine." I doubt you would say, "I need police here now, but I don't want any killing machines in my home, so don't bring your guns."