Re: Homosexuality "Age 18+"
Homosexuality is genetic. The exact X factor that ultimately determines this is currently unknown, but there are several factors that correlate with homosexuality being a trait in animals.
There is no such thing as being "Naturally" gay, it's a choice.
Because a diploid zygote requires two haploid sets of genes which can only be carried out by fertilization? Did you pay attention in high school Biology class?
Why then do you think it is that Males or Females can't breed with the same gender?
Our Bonobo cousins would like to have a word with you. Sure, they may not be as intelligent as us (as much as I find that hard to believe nowadays), but they are very, very closely related to us on an Evolutionary scale.
And stop comparing humans to animals, our intellect is on a very different level, and so are our moral codes.
And then we have lions, penguins, seals, dolphins, pigs, dogs, and many other species from many other geni from many other families that practice homosexual acts in Nature.
I shouldn't say you need to practice up on your Biology, but it really sounds like you need to research what you are arguing against before you debate it.