she was right about his despair but not about the fact that there has to be honor in killing. there isn't a more honorable way to kill someone. either it's self defense and they left you no choice or you have no business doing it. killing people in an attempt to rob a bank isn't any better off than killing people because you're a sick fukk that enjoys making people suffer. the end result is the same. you violated another human being for your own greed.Auturia was right and that's why Kiritsugi was like pseudo-monk at the end