Tom you're going to have to accept it: nothing's going to change on that score.
It is how it is, and it's way too late. In fact, as much as I hate the idea of armed civilians, were I living in the States and allowed to do so, I would also have a pistol as close by as I could. There's no glory in being the weakest in the pack. No glory and no common sense. In fact, I often wish that I had something at home with which to protect myself. In winter, I'm the only guy in my block. I am in no physical condition (or position) to play Kung Fu with anybody wishing to help himself to whatever I have at home.
The 'home is sacred' concept makes perfect sense: break in and expect to pay the price - the choice is yours to make; I'd rather you didn't force it upon me, but if you do... sadly, I'm not allowed the opportunity of holding the dominant hand.
It's never a simple choice, I guess, and you have to apply the rules as they are where you are.
Frankly, I think that the chance of banning guns in America is as great as seriously cutting state hand-outs in Britain. No political will for it, only rhetoric. You're better off making more photographs than worrying about it. I'd take my own advice, but as I realise that pretty much anything other than photography of people is ultimately meaningless for me, I have sort of decided to stop wasting even more time in front of the computer making beautiful, pointless images that have no future.
Rob