> many times the robbers do realise in their aftermath that they should in fact have killed you

Well I agree that you should get to as safe a location as possible immediately following a robbery, however I really would like to see the post you had in mind. Maybe I have a different percentage in mind when I read the word "many", but I'm highly skeptical that this is a common occurrence amongst robbers. Granted they tend not to be the best critical thinkers, but why would they risk adding homicide to the list of charges should they be caught?