DentArthurDent wrote:
The only purpose of a gun is to kill.

Not entirely true. Guns where originally intended to kill, but now there's plenty of ways you can own a gun without the intent to kill.
First way's as a psychological deterrent, if you're a thug that's about to break down someone's bedroom door and all you have is a knife, and you hear someone rack the slide or action of a pistol/rifle/shotgun, what's your first response going to be? Unless you're high on meth or something similar, you'd have to be ret*d to not run away.
And now there's the wide variety of less-than-lethal ammunition you can get fairly easily now. You can get pepper spray rounds, flash-bang rounds, rubber rounds, rubber rounds filled with pepper spray, and they've even made a new 12-gauge round that's a taser (law-enforcement only, currently). Hell, the only reason I plan on getting a 12 gauge pump-action shotgun is for the LTL rounds.
Anyways, random rant aside, I'm actually the odd combination of a pro-gun Democrat, because while I hate the thought of having to kill someone, I understand that there may be situations where there is no other choice. There is a vast difference between an abortion and killing a guy high on meth coming at you with a knife.