Only a liberal would think a person must be the victim of a criminal by having to flee. I noticed only the liberal East Cost States have such laws because they started with the flee requirement in the first place. We here in the West have never had such stupid liberal laws. Only an idiot would think a person must flee a criminal. If criminals don’t want to be beat to sh*t or dead then they had best not attack anyone.
I absolutely don't think you should "have to flee".
But, in your home and curtilage, there is no legitimate "third option" - which is "stay out of trouble". If a zombie kicks in your door, the trouble has arrived.
On the street, though, there are many, many chances to walk into or stay out of trouble. When I lived in Brooklyn in the 1970s, I avoided trouble all the time. I never thought of crossing the street for 3 Trayvons to be "fleeing", and I don't think CCW should embolden you to walk into trouble you could easily avoid.
Also, see above. I think Zimmerman is innocent by common law and Florida statute from before SYG, his case is not an SYG case.