You have diabetes and after stretching out your insulin you finally ran out. You located someone who could barter it with you but they just refuse to do so time after time. To be without it would mean your death, and you have your family who depends on you. You realize robbing the man would be impossible due to the repercussions but you could assassinate him instead and get the insulin you need. Would you put your fate on another person if you were sure you would die?