Homosexuality in nature is basically just nature's masturbation.
Animals are just using it to get off, or lack the mental capacity to distinguish male from female and/or are following instinct to mate.
most animals don't even get pleasure from sexual reproduction, but do it as instinct. There are, however, many exceptions and many animals that do also gain pleasure from sexual reproduction (mammals such as dolphins)
Animals have also been observed masturbating, as well as copulating with inanimate objects (and animate animals of other species).
If you want to use homosexuality in nature to support homosexuality in humans, you need to accept the fact that it relates to perversion only, and the animals are not choosing to be homosexual at all. If anything, in animals it is pansexuality.
Since humans are essentially animals with a greater mental capacity, it would make sense that we still have some animal urges... but to act upon them is nothing more than perverse stupidity.
We are able to distinguish from the male and female members of our species.
A human being copulating without any intention of reproduction is doing so solely for the purpose of pleasure.
A glorified form of masturbation, where two individuals mutually masturbate.
Identifying with homosexuality is basically announcing to everyone that you enjoy mutual masturbation, and to be honest nobody gives a fuck. Everyone on this planet has a sexual preference from which we derive sexual pleasure. Keeping it to yourself and not wearing it on your sleeve is part of being a human being.
Discussions about your sexual preferences belong behind closed doors and not shoved in the faces of others.
Please keep it to yourself.