I'd rather not take the chance that the person who robs me isn't someone who's just using a weapon as a scare tactic.
And fuck yeah, if five guys in a city attacked and robbed me, and I feared for my life, I would definitely shoot them... Or at least do my best to shoot as many as I could. If you fear for your life, then what idiot wouldn't? Your chances of survival if someone's trying to kill you and you don't fight back are zero. However, if you DO fight back, your chances greatly increase, regardless of whether it's five attackers or one.
IT IS BEST TO HAVE A FIREARM AND NOT NEED IT THAN TO NEED ONE AND NOT HAVE IT.
I have shot many thousands of rounds through dozens of guns, particularly those that I hunt with and those that I carry on my person. Most people who use handguns to attack people haven't spent dozens of hours (if any at all) practicing firing, as I have. The odds of me hitting my target are extremely greater than theirs, and thus, my chances of survival if I do become involved in a gun fight are also much greater.
My boyfriend's cousin was shot four times during a gun fight a few years ago, and a good friend of mine who was with him pulled out his own pistol and fired back, killing one of the men who had shot Adam. My friend was charged with various degrees of murder and manslaughter and was acquitted of all charges a year ago because he was defending his best friend. Adam got married this year and is expecting a child in May. That wouldn't have been possible if Anders hadn't been armed himself.
Here's the article:
http://www.adn.com/2011/11/22/2184575/suspect-acquitted-in-06-gunfight.html