Shooting someone over dollar store items is dumb. But defending your sole proprietorship you have built up and is the only thing you have, understandable.
Secondly, this is a single, solitary reason out of the myriad of other reasons, why we, as as a species, invented insurance.
Please, give up your childish John Wayne fantasies, which, to be honest are barbaric and counter to the very essence of civilization, and join the adults who build societies and systems that protect people.