OK, well let's come from the opposite angle then. Can you list some redemptive or positive contributions that homosexuality offers society?
"Redemptive"? Gee, and I thought you were coming at this from a strictly mathematical, non biased angle.

Redemptive has no meaning scientifically. As for 'positive' contributions I can list several:
1) Relief of sexual aggression/frustration in situations where pregnancy and birth are best minimized for various reasons, such as food shortage or immediate or medium term peril where a smaller group is more likely to survive.
2) Same said relief to stave off social tensions as used in the Bonobos, who essentially screw to stay together in peace.
3) Satisfaction of the sex drive in males when females are in short supply, so they don't tear each other to pieces.
4) Interior decorating.
I am unaware of any gene that has been linked to natural population control, is this the first perhaps? That is a bit far fetched IMO.
Tell that to the lemmings who dive off cliffs and attempt to swim across oceans to breed and to keep populations in line in areas where they've exploded. The point of my post was to point out that neither you nor anyone else truly knows the answer to such questions, which is what makes broad statements concerning the behaviors presumptuous, and asking me for answers I have already stated aren't available rather strange. Unless of course you already think you have them, in which case you must have access to a large body of research previously unknown to science.
In any event I have nothing more to say on the issue. Your repeated slips in language, such as asking for 'redempetive' qualities, make it pretty clear to me where you are coming from on the matter. Of course if you truly are a rational, science inclined person you might want to question the idea of making such pronouncements regarding survival benefits in light of the almost total lack of evidence on the subject. Your focus on the procreative possibilities is narrow and short sighted in the extreme, and in no way encompasses the enormity of developed characteristics and behaviors evident in all animals that help them survive, individually and as a species,
aside from having as many kids as possible. Procreation is slaved on the back of pleasure, and pleasure can serve a lot more purposes individually
and socially than leading people and other animals to populate as much as possible.
Beyond that there's not much more to say on the topic. And, in my experience, those who continually harp on such subjects in an attempt to marginalize or otherwise detract on any level from the humanity of certain portions of the population have other agendas they're following, and that aren't worth humoring.