What if you found out you've been doing something terrible your entire life?

This is inspired by an episode of the podcast "Generation Why." It's about a man named Scott Falater, who killed his wife and then served her body to their guests at a dinner party. <br><br>I was thinking about the implications of this for the first time, and the first thing that came to mind was the concept of "the double effect" in ethics. The idea being that when one has a morally justifiable goal, it is acceptable to do something that may have a morally negative effect, as long as the morally negative effect is not the intended outcome. <br><br>For example, a doctor performing an amputation to save a patient's life might have the unintended effect of causing the patient to become a paraplegic. The doctor's goal is to save the patient's life, and while the amputation has a negative side effect, it is acceptable. <br><br>But if one does something wrong in ignorance, that doesn't make it any less wrong. <br><br>For example, the infamous story of the "Milgram Experiment" shows what happens when someone does something wrong in ignorance. People who are told to administer shocks to someone who gets questions wrong will continue to do so even up to the point of lethal force. <br><br>So what do you think? If you find out that you have been doing something terrible your entire life, would you keep on doing it?