Of course, yes. Your society is a lot more violent, and yes Widow, put like that I can see your passion and most of all your point. When I said insane or mad or whatever I was speaking figuratively... it just seems that way to me because I am from a society where you don't need to pack the heat.
You don't need to tell me about robbers... unfortunately I used to be one. Growers and dealers are easy targets because they can't go to the police, you can wait a while then rob them again a few months later. Kidnap is a method they use too, take someone close to you off the street then give you the phone call and the ransom demand.
I was never one myself, but you've got guys out there that are robbing simply to fund their crack habits. They'll earn a few grand and blow it all on crack in 1 or 2 days, then they're back out again risking years in prison when they are caught.
If I were you I'd have a small arsenal too. I don't think you're crazy, it just seems crazy to me. I've never been to America, I don't know what it's like. Everything that happens over there happens over here to, only we are a bit more reserved. Sorry about your friend, mate.