The reason is that people should not lie is a lie to make others lose confidence in ourselves, we can not even trust the lies will seem trivial. But for those who were fooled then. It is not at all trivial It might make the relationship between you and another person stopped. And people who lie, it looked very bad in the eyes of people. If the lie that it makes many people who have suffered so great a life as possible and minimize the problem is to give love to each other.