What is the purpose of ethics?

I have been thinking about the purpose of ethics and how it functions in practice, and I find it rather confusing.<br><br>* We are all subject to the same laws, so we have laws already.<br>* Ethics has no enforcement mechanism.<br>* Ethics has no unified standard.<br>* Ethics has no way of establishing what is right or wrong, because of how ever changing the world is.<br>* Ethics has no way of ever establishing what is right or wrong, because ethics has no universal definition of terms.<br><br>I know a lot of people want to say that ethics is about doing what is right, but that is so much circular reasoning.<br><br>* Ethics says that the purpose of ethics is to do what is right and moral.<br>* Ethics has no way of defining what is right ever, because the terms change to often.<br>* Ethics then proceeds to say that what is right and wrong change too, so it can never be defined.<br>* Ethics then proceeds to say the purpose of ethics is to do what is right. (A circular reasoning that cannot be fulfilled.<br><br>Ethics has no real purpose, and it is much better to simply follow the law and ignore ethics.