First off you can't compare the situation to modern society, we have kind of made an artificial environment. This is because society can go away in the blink of a second, its not forever, nuclear holocaust can eliminate it instantly resulting to pre-caveman days.
I simply do not agree, i think it is obvious that homosexuality is some kind of developmental error in the original blueprint of our genes. You never answered my questions on whether having born with a third eye , or with no hair, or with purple eyes, or with schizophrenia, is abnormal. These are just as abnormal as homosexuality is... they are just not what the ideal biological human being is programed to have. It is very clear that every aspect of our body has a specific function that helps us survive and our sexual drive is one of them... and homosexuality is NOT one of them.
Homosexuality is abnormal, but its not immoral or bad. They arn't inferior, just different. In my opinion if we had to send Invading aliens a perfect example of the collective gene pool of a normal human being... they would NOT BE GAY.
I am trying to be respectful. It seems to me that you're arguing that homosexuality is abnormal, because it could hinder our ability to survive and reproduce the population, right?
So it's important for me to ask, do you understand that overpopulation can drive a species to extinction? Putting too much stress on our food and water resources can extinct them, and eventually have consequences for our entire species. Promoting growth and reproduction is not a good thing... Overpopulation can have serve and negative consequences. China for example would kill children because of overpopulation.
We don't want overpopulation, so it seems to me that for evolutionary purposes have some people incapable of reproducing because of infertility or even homosexuality. Everybody not reproducing is beneficial to us. We just can't keep growing as a population, keep paving more roads, cutting down more trees, or keep exhausting all of our natural resources because we would be slowing killing ourselves.
Also, to suggest that we were forced to live in caves and not be able to reproduce suggests that homosexuals don't even care about the species...
1. We don't need clinics to reproduce without sexual intercourse. We need semen and a vagina.
2. The rate of reproduction would depend on the number of women to men.
3. If a group of men were that concerned about reproducing in such a crisis, they could very well resort to rape which is why your attitude is jacked up.
Bottom line is, homosexuals do care about the survival of the human race and reproduction rates are far from being the only thing you should be concerned about.