Given the high incidence of homosexual behaviour in many species (in cases such as bonobos and some macquaces it is pretty much part of their normal behaviour)
I would hardly the incident rate of homosexuality in nature to be "high". Extremely few animals compared to the total number of species engage in this. And then, also, even the ones that DO, are mostly not HOMOsexual animals, though they may have some same-sex interactions. Maybe they're swingers or bisexuals or whatever, but that is a different thing. A homosexual is only attracted to his/her own sex, and therefore would only have sex with his/her own sex, and therefore would not be reproducing. Ergo, no progeny and their individual genes (not just the homosexual ones if there are such things) would cease to be passed on. Therefore, it is an entirely negative trait in evolution. I'm going to stick by that, but I'll read more.
Given the high incidence of homosexual behaviour in many species (in cases such as bonobos and some macquaces it is pretty much part of their normal behaviour)
Well thats nice but if you're not human, an animal would have to be bisexual to cash in on their desire for children (if one exists), otherwise it just wouldn't work. If you're a gay bonobo, the in vitro fertilization option is just not happening!
If homosexuality is NOT genetic and IS ‘choice’ (not saying it is, just if) does this actually make it wrong?
No, but I never insinuated that it was wrong anyway. I'm just saying pure homosexuality is a negative trait in evolution. You can twist isolated examples and gene theory as much as you like, but the fact is, the result of pure homosexuality leads to the exact opposite of evolution's stated goal. Its not brain surgery; look at all the posts on this page. They are all saying "we should be for gay people because it cuts down on overpopulation" Its an obvious observation that its going to lower offspring and end genetic lines of most homosexual individuals. There are people born that hate children and never want them. Maybe there's a biological reason for that. Whatever it is, it too is contrary to evolution. Its "unnatural" in that sense. But its not like i'm going to say or think "what a freak" when I see a 50 year old happy single guy. And the same goes for a gay or lesbian person.
The bottom line is we shouldn't have to show a biological reason FOR homosexuality in order to accept it. And the argument for homosexuality shouldnt have to feel the need to defend every possible argument at the lengths we have been. So its contrary to natural evolution? So what? Its your choice, its not hurting anyone else, so go ahead and life your life your way.
Heterosexuals also enjoy sex even when there is no possibility of producing offspring. Reproduction is only one of many reasons for sexual activity.
Yes, but in evolution, having sex has as itsultimate purpose to produce offspring.