That being said, Leviticus isn't something the Christianity should look to, because on the first apostolic council apostles made a bit of a different principle: "But concerning the Gentiles who believe, we have written and decided that they should observe no such thing, except that they should keep themselves from things offered to idols, from blood, from things strangled, and from sexual immorality." Acts 21:25
It is a principle of certain legal minimalism, according to the new status of Christians as sons rather than slaves...
Yet, nowadays we often see people seeking the old good legalism.
Psychiater Erich Fromm tried to explain how people seek it from their insecurity from too much freedom.