Christianity and divorce
It is impossible to estimating how many Christian fundamentalists (especially fundamentalist women) worldwide live unhappily in abusive marriages due to the New Testament ban on divorce. It is similarly impossible to estimating how many Christian fundamentalists children grow up with problems because during their childhood they too often have to watch their parents abusing each other or have to watch father abusing mother. Jesus may have been celibate or he may have been happily married to Mary Magdalene but he certainly was no authority on unhappy marriages.
Reasonable moral philosophers will accept that in the area of marriage social scientists who understand the effects or different rules and systems should have an input. A strong case can be made that Utilitarianism can serve modern society better than any time honoured text.
"Suppose a woman was divorced by her first husband because he found something disgraceful about her. He wrote out divorce papers, gave them to her, and sent her away"
"So they are no longer two, but one flesh. Therefore what God has joined together, let no one separate. “Why then,” they asked, “did Moses command that a man give his wife a certificate of divorce and send her away?” Jesus replied, “Moses permitted you to divorce your wives because your hearts were hard. But it was not this way from the beginning. I tell you that anyone who divorces his wife, except for sexual immorality, and marries another woman commits adultery.”"
"If she go not as thou wouldest have her, cut her off from thy flesh, and give her a bill of divorce, and let her go."