Couple that with stand-your-ground laws in some states and it's a recipe for sheer insanity:
en.wikipedia.org
Even areas that impose a duty to retreat generally follow the "
castle doctrine", under which people have no duty to retreat when they are attacked in their homes, or (in some places) in their vehicles or workplaces. The castle doctrine and "stand-your-ground" laws provide legal defenses to persons who have been charged with various use of force crimes against persons, such as murder, manslaughter, aggravated assault, and illegal discharge or brandishing of weapons, as well as attempts to commit such crimes.
In Florida, self-defense claims tripled in the years following enactment.
[22][23] Opponents argue that Florida's law makes it potentially more difficult to prosecute cases against individuals who commit a crime and claim self-defense. Before passage of the law, Miami police chief
John F. Timoney called the law unnecessary and dangerous in that "[w]hether it's trick-or-treaters or kids playing in the yard of someone who doesn't want them there or some drunk guy stumbling into the wrong house, you're encouraging people to possibly use deadly physical force where it shouldn't be used."