It's funny, I was about to defend the military but the FBI profile for serial killers seems to be young, white, male, with a stint in the military, jobless or low wage job, who lives at home with his mother. I really think it's the last that drive them to murder.
I'm one of the few who thinks that the second amendment doesn't actually cover citizens bearing arms, but doesn't care. I don't want to take away anyone's right to self defense. It is true that if you outlaw guns then only outlaws will have guns. I would however, like to take the cheap, throw away, saturday night specials that the gangbangers love of the market. If they had to buy more expensive weapons they might not bother. Owners might be more careful about preventing their theft, thus limiting the access of the gangbangers to some weaponry. Unfortunately there is a black market in cheap guns and someone would scream that we were taking away a poor persons right to self defense.