Deontologist ethics are preferable to utilitarian ethics
but
score: 2
You can judge an ethic only on its outcomes. Deontologist ethics are based on simple principle that protect us from bad outcome in most case. Utilitarian ethics are a bit more sophisticated and aim at giving the best outcome possible "in average".
Deontological ethical judgements are consistent. If, for example, violence against a nonviolent person is morally unjustifiable in one case, then it is morally justifiable in all cases.
Utilitarianism could lead to absurd and subjectively unjust consequences. If, for example, I am more skilled in managing money then you are, utilitarianism can be used to justify that I expropriate the content of your wallet or bank account.
Utility cannot be measured adequately. A utilitarian cannot say with absolute certainty that taxation (expropriating a person's (usually) money for the benefit of government agents) is justifiable whereas a deontologist can say with absolute certainty that property is absolute and theft is immoral.
m2
