In most of the anecdotal examples of guns preventing a crime it's worth noting that the attacker, the thug, usually has a knife or some weapon other than a gun.
Walk me through a situation where having a firearm on your person will thwart a mugger's attempt to steal your money. Or better yet, someone trying to steal my money.
So I'm walking down a dark street in a bad neighborhood and a mugger pulls a gun out on me. Assuming I'm armed, where do I keep it? I like to wear t-shirts and jeans, so would I have to stick it in the back of my pants like that gaylord Magnum PI? Or, whatever, suppose I have a nifty holster under my jacket. If somebody points a gun at my face... what am I going to do? Cartwheel behind the parked brown sedan to my left while pulling out the weapon? When Bruce Willis messes up the director shouts "cut" and they set up an other take.
Will other citizens bring out their Smith & Wessons to "protect" me. I've met a few Texans. I don't trust the average Texan -- or the average American -- or the average person -- to protect me while I'm only feet from a criminal. Then I go from mugging victim to hostage in under sixty seconds. And who knows whether or not some wingnut will start opening fire.
And what's the deal with this stuff about old ladies needing guns to protect themselves? (one guy mentions his granny in the talk back section after the article). Geez, my grandma, an octogenarian, has difficulty lifting a glass of water. And do criminals really instruct women to go through their purses to hand over the wallet? That could take a half an hour! Wouldn't they be wise just to grab the purse? Anyway, doesn't Mace weigh less and isn't easier to use?
And if citizens were widely armed then couldn't that create a perverse incentive for not only the criminal to lock and load, but his next victim might have a nice piece of hardware (which he can sell to a seedy pawn shop or one of his thug buddies).
Guy from Texas:
Criminals have a question they ask themselves when they think about approaching a house out in the country: Is that family armed or not? More than likely they are.
That's certainly one of the more common arguments. If people really insist on carrying guns, can they load them up with rubber bullets? The criminal will have to ask himself: is that ammunition going to kill me dead or hurt me bad? Besides, I bet killing someone with a rubber bullet would garner far more attention and praise at the next local NRA gathering. "You should've seen the sonofabitch writhing on the pavement, Duke. Bang! right in the back of the head. Heh, you can run, but you'll just die tired. Since he wasn't clearly on my property, I dragged him a few feet before the ambulance arrived. He died on the way to the hospital!"