SNIP
>To me there are three different trains of thought here:
>-I will never kill anybody (You)
>-I will kill somebody if I have to (Me)
>-I will kill somebody if they mess with me
>
>I think the majority of the murders fall into the 3rd group. That means they are prepared to kill somebody, which is why they have a gun handy. Take their gun away, and they will feel insecure and have to find something else.

Well that simply doesn't happen here (Canada), at least not in the numbers you seem to predict. Yes, a knife usually replaces the gun, but just the idea of stabbing someone again and again and again has to be a deterrent to many who might be so inclined.

I also think your second category (not you personally, but many others) is the source of too many "accidental shootings" and domestic murders done in immediate anger.

There really is no way around the argument that there being so many guns in the U.S. in the hands of such a wide variety of people had the death rate from guns far far higher than any other civilized country in the world.
And there really ought to be a way to get some control of the situation.
Here anyone who wants to own a gun (rifle or handgun) can do so. They just have to EARN the right as well as have a reasonable mental health record. That's gotta be doable in the U.S. too.

cheers