Technically you already do. Most jurisdictions around the world impose a duty to retreat, often quite strictly. The United States is an exception, largely an artifact of our frontier history and Wild West lore.
There's a reason why the United States is such a violent country, and one of the most violent where law & order haven't broken down. I'm not saying I disagree with your sentiment that one should be given some liberties in meeting aggression with aggression. It's how I feel, too. (And I'm not shy around guns, FWIW.) But that feeling was nurtured by our violent culture. In most other countries people don't feel a compunction to buy a gun or otherwise arm themselves after being burglarized or carjacked. A predisposition to resort to violence isn't universal, not among developed nations, not even for defense. That took me awhile to wrap my head around, but IME (Ecuador, Mexico, Malaysia) it's true, even in countries with significantly more violent crime than we have.
>There's a reason why the United States is such a violent country, and one of the most violent where law & order haven't broken down.
The big problem I see is the easy availability of guns, which has turned into an arms race of sorts. So victims (such as for carjacking, the subject here) have very good reason to fear that attackers are armed with deadly weapons, and so many people want to carry guns themselves to defend against this, and so the criminals carry guns too.
In other developed nations, there's generally no easy access to guns, so a victim doesn't have such a large reason to fear for their life. The worst thing they have to worry about is usually being stabbed with a knife, which is generally much more survivable. So these countries generally have much less deadly crime, though they have more petty street crime (pickpocketing or purse-grabbing for instance).
Countries where they have more violent crime like Mexico, El Salvador, etc. are ones where law and order really have broken down, and these aren't "developed nations" either; poverty and crime are both rampant there.
The problem with gun control in a country that already has a high number of weapons per capita, as well as a constitutional right to carry them, is that people will refuse. No one likes to be helpless, and the manufacturing technology is pervasive. But what if we made all guns illegal, and the US citizens actually complied? End result: only criminals will have guns. That is a problem the police cannot possibly cope with. As a carjacker, I would feel way more comfortable in this situation.
With regards to guns, I agree. We're a violent society that suffers violent crime and a violent response to crime. And I don't know how to untangle things other than to first appreciate the complexity of the situation.
I just think it's important to understand that ours is a rather unique culture. Arming oneself is a reasonable response given our cultural values, and I support Americans' right to own firearms for self-dense (albeit with more regulation than commonly required). I hesitate to say it's reasonable in light of our violent crime. Middle-class Americans suffer very little violent crime. The ones who suffer the most, such as in inner-city ghettos, are communities that most vociferously support gun control and the most skeptical of self-defense arguments. But in any event most other cultures take a polar opposite view--that even aggression in self-defense is to be disincentivized--and I appreciate that it's also reasonable.
There's a reason why the United States is such a violent country, and one of the most violent where law & order haven't broken down. I'm not saying I disagree with your sentiment that one should be given some liberties in meeting aggression with aggression. It's how I feel, too. (And I'm not shy around guns, FWIW.) But that feeling was nurtured by our violent culture. In most other countries people don't feel a compunction to buy a gun or otherwise arm themselves after being burglarized or carjacked. A predisposition to resort to violence isn't universal, not among developed nations, not even for defense. That took me awhile to wrap my head around, but IME (Ecuador, Mexico, Malaysia) it's true, even in countries with significantly more violent crime than we have.