Never, because "You cant be right by doing wrong; you can't be wrong by doing right."

                                             -Thomas S. Monsond

This quote means that you could never feel good or not guilty when you have done something bad. You should always choose the right. Sometimes people do bad things just for the benefit for them. People are selfish and become cruel. But you could never do something negative and feel good about yourself because is wrong. An example of this quote would be stealing from your parents. Maybe you need money for something but stealing is not the way of getting it. Asking for money would be way better than stealing. If they don't give you money then you just have to understand and move on. But you should always choose the right so you feel good.