I can see how 'meant to work' would sound strange, especially since we normally talk about sex as something that should be based solely on our individual physical urges - whatever they may be.

I would say that marriage and sex get their value and purpose from God. That he created man and woman to come together in marriage and have sex. That he made sex pleasurable, and good, and that one of the benefits of sex is often that children are produced.

I think we must either get our understanding of sex and marriage from a source outside ourselves (the transcendent God) or we just make things up to suit our individual drives - and the second option opens us up as individuals, and as a society, to a lot of harm.

I understand this is not a popular viewpoint, especially on HN, but I think it's valuable to offer some pushback in a civil way every now and then.