From what I have learned, there is no real consensus on what causes homosexuality.
Classic biblical Christianity states that humans are born in sin. According to such a view, “born that way” and “chosen” could be both/and, in some cases.
I believe it does tie into the nature of the “sin in Adam” (and Eve). Regardless of the time line by which it plays out on this earthly plane.
When humanity, as a group, went for the great lure of “knowing good and evil” (which was a sham, because only God can truly do that) it embraced all manner of confusions and oversimplifications.
As a father who successfully raised three young daughters to be useful young ladies and great mothers, I can testify that virile young men can and do have a sudden change of their orientation by just looking at my S & R six shooter or my Samurai sword, both of which are prominently displayed in my living room.
Desires which are unnatural (as “uniting” with an anal cavity or goat” ) is never a “born with desire” (genetic). Man is not “born” with a desire to rape babies or children or other males. It is a warping (intrinsic disorder) of desires (Worldview) which is formed by a toxic culture/environment.
All Virtue is learned and habituated by experiences in nature. Without a loving mother and father, children can easily be warped and their desires perverted-—like with Chastity Bono being raped when she was 11 by a Lesbian. The perversion can be caused by peer rejection (emasculation) also and absent fathers or by fathers who belittle their boys or overbearing mothers.
All unnatural desires are learned and habituated by early child abuse usually (or neglect). (Moberly, Psychogenisis).
OR-—there is absolutely no moral formation in young childhood, so children grow up with the mindset of Marquis de Sade (or Jeffrey Dahmer), who was a sodomite along with a believer in the destruction of marriage and all biological connections (Marxism) and could do any dehumanizing and degrading thing to anyone, even children. Homosexuality is pure lust and narcissism and a fixation in a puerile stage of life.
There is no such thing as “genetic”-caused desires which go against Natural Laws-—although there could be abnormalities at birth—which can be measured scientifically—but those are extremely rare and caused by toxins in the environment.
All history proves that little boys that are raised in harems and abused, will grow up to lust after males/boys and goats or whatever-—there is no sexual morality formation—none. They will hate and mutilate the opposite sex-—who will be relegated to “breeder” and children will be bought and sold-—usually for sexual abuse like with the Samurai and the Spartans and in Afghanistan, which end up being the most sexist cultures on earth.