The law should absolutely provide that someone may “stand their ground”. Sure, the better part of valor is to withdraw and avoid bloodshed if possible, but it can’t be left up to a court to determine what was, and was not “possible” at the time. I wouldn’t want anyone second-guessing my threat perception, especially when they have the luxury of cool-headed distance of time and space, and I didn’t. I would hope the law would back me up.
In all states it’s what you believe at the time that counts, not what is or isn’t actually going on after the fact.