"the evidence is EMPIRICAL"

You keep using that word. I do not think it means what you think it means.

Same goes for the use of ellipses, by the way.

"Take a number of homosexuals, both sexes, put the males on one island,
put the females on another island ........give them anything they want
or desire ..... deprive them of nothing ALLOW THEM TO EXPRESS THIER
DESIRE FOR ONE ANOTHER ..... unrestricted and outside of anyones
judgement ............ but they cannot leave and they cannot have the
opposite sex ...... come back in 60 years ...... nothing will be left
........ society DIES .........."
Heterosexuals of just one sex would not last longer either.
Also, I "love" the assumption here that the ONLY way to contribute to society is reproduction...

"Heterosexuals of just one sex would not last longer either."

Heteros .... DO NOT DESIRE THEIR OWN SEX ....... the object is to GIVE THEM THEIR DESIRES ..... and most homosexuals will tell you that the opposite is ABHORRENT to them .......

"Also, I "love" the assumption here that the ONLY way to contribute to society is reproduction..."

it is not an assumption ...... if you FAIL to make new members to replace the ones that die ..... THERE IS NO SOCIETY ............

1. Homosexuals do not want their own society without the other sex, they want to be an accepted part of society and be allowed to love who they love.

2. Way to miss the point I wrote IN ALL CAPS!
Of course reproduction needs to happen for society to survive. However, it should be self-evident that this is not all there is to society. Furthermore, humanity's population is very, very, very far from the point where a few people not reproducing would risk extinction for the species.
What about a couple who are childless (possible even without a choice on that matter due to infertility), but adopt an orphan and raise the child as if it was their own? Have they not contributed to society?

"they want to be an accepted part of society and be allowed to love who
they love."

it is not love ..... it is NARCISSISM ..... love does no harm to another ..... EVERYTHING the homosexual does harms themselves, their"partners", their families, and society in general ....... what they want is irrelevant ....... what they do is relevant ......... and what they want DESTROYS society .......