Ethical theories like Utilitarianism (by John Stuart Mill), Deontology (by Immanuel Kant) and Moral Relativism help us understand how to take right decisions in real life.Utilitarianism says we should do what gives maximum benefit to maximum people, but sometimes it may ignore one person’s rights. Deontology says we must follow rules and duties, but it can be too strict in tough situations. Moral Relativism says right and wrong can depend on culture and situation, but then common values may become weak.So overall, these theories show that moral decisions are not easy. We have to think about results, rules and situation together. They teach us to be responsible, honest and open-minded while taking decisions.