Apollo, guns don't kill people, any more than hammers drive nails. Of course, hammers do make the job a lot easier, but do you really think crooks and killers can't do you in without a gun if they have to?
Guns are just tools, machines, devices. I could drive a nail with the but of a gun, or I could kill a man with a hammer. The tool is not to blame for the actions of it's user. To make guns a scapegoat for the evil that men do is a fallacy. The entirety of recorded human history up until the invention of gunpowder shows that people have had no trouble killing people with clubs, rocks, knives, arrows, poison, etc.
I don't know the legal situation regarding guns in NZ- but your post makes me think they're illegal there. A lot of people think they should be here, too. The thing is, on an small (compared to the US, anyway) island, it's not totally impossible to round up all or almost all of the guns and take them out of circulation, and then keep new ones out. Here, that's just not really an option. There have always been guns here, since before the time of our revolution. Hence, at any given time, there have been too many for the government to hope to find them all. It's impractical to think that the owners will all agree to surrender them, either. When you've got as many people as we do, you simply cannot get even close to unanimous support of ANYTHING. And with the zillion miles of border we have, it's impractical to think we could keep new guns out. I imagine that the criminal element in NZ has guns. I imagine that if YOU wanted one bad enough, you could get your hands on one. If that's true in NZ, it's even more true here. So why try to fight the tide? We CAN'T get rid of guns. Once you accept that, you have to accept that making guns illegal will only ensure that criminals with guns go un-opposed, and law-abiding citizens are deprived of a fun and useful tool. Plus, If we're ever need to fight the government (don't laugh folks, it's only been 230 years), we'll need 'em.
Just so we're clear here, I don't carry a gun. I'm not a nut who thinks we should overthrow the government.
I'd also like to point out, that everybody in America doesn't wander about the country with a pistol in his belt. Most Americans don't have a gun. Most of the ones who do have one don't carry it. TV and movies paint a very different picture from reality on the subject of guns, the same as they do on everything else. Reading your and BrokenBones' posts makes me realize what harm our entertainment industry is doing our image in the world at large. Look, there aren't guys doing Jackie Chan stunts in the streets wherever you go in China, and there aren't dudes with machine guns under their overcoat walking around here, either. I have never in my life walked down the street and worried that maybe the guy behind me had a gun. We're mostly just regular people here, same as everywhere else.