It all seems to stem from wanting to enforce this:
If a man also lie with mankind, as he lieth with a woman, both of them have committed an abomination: they shall surely be put to death
Leviticus 20:13
But none of these:
If a man takes a wife and, after sleeping with her, dislikes her and slanders her and gives her a bad name, saying, “I married this woman, but when I approached her, I did not find proof of her virginity,” then the young woman’s father and mother shall bring to the town elders at the gate proof that she was a virgin ... If, however, the charge is true and no proof of the young woman’s virginity can be found, she shall be brought to the door of her father’s house and there the men of her town shall stone her to death. She has done an outrageous thing in Israel by being promiscuous while still in her father’s house. You must purge the evil from among you.
Deuteronomy 22:13
Jesus looked at him and loved him. “One thing you lack,” he said. “Go, sell everything you have and give to the poor, and you will have treasure in heaven. Then come, follow me.”
Mark 10:21
And if a man sells his daughter to be a female slave, she shall not go out as the male slaves do.
Exodus 21:7
You shall not shave around the sides of your head, nor shall you disfigure the edges of your beard.
Leviticus 19:27
You can't pick and choose your laws from above, people. All or nothing here.