Could I kill? That is like asking if I can breathe, no matter who you are or your belief's any and everyone could kill someone, a good example of this ideology is the anime Trigun. For spoilers sake (if you haven't seen Trigun you need to) I will say no more about that. I have no reservations about killing; to end a life is easy. The idea of who deserves to live and who should have the power to decide that is a more relevant question.