I think many today don’t seem to realize that more than being anti-homosexuality, the Bible is very much in favor of the procreation of the species and the continued creation of human beings who might come to faith in God through Christ. Homosexuality is just one of many things that work against that possibility.
But the unique compatibility and complementarity btwn male and female, and sexual sanction in marriage, extends beyond procreation. But there is no Song of Solomon glorifying romantic and erotic love btwn same gender couples.
Good point.