The Founders studied other cultures extensively and found great fault with hedonism in the Roman and Greek empires among other cultures that glorified homosexual behavior. The rampant homosexuality and other sexual perversions led to an unjust civilization and to the debasement of women and children, who were also used and abused sexually and treated as slaves.
Studies in primates, etc., have shown that when you interfere in the natural process of animals raising their young, the young become pathological in many areas and are sexually abnormal.
Homosexuality is not genetic....it is a behavior that is caused by environment--mostly emotional and physical abuse--so by that logic, the behavior should never be elevated or glorified in any way. If it is, you are advocating child abuse. Sexual morality in religion and marriage were instituted to protect the man/woman relationship and to promote the healthiest environment to raise emotionally healthy children for the most successful future of a civil society. Their idea worked to the greatest degree ever for the most diverse population in the history of the world.
Why would anyone want to go backwards and copy the Spartans or the Nazi Brownshirts or the imperialist Japanese, in elevating behaviors that destroy the family of man in every civilization that nihilistic behavior was embraced.