homosexuality is a strategy by which men co-opt resources and try to make the best of their traits in an organised society. nobody is born a homosexual, but some people can be born with an inclination to develop homosexuality (like with schizophrenia having a genetic tendency but only being activated by environmental factors). the congenital factors i am not sure about but they may include a degree of biological/psychological femininity, and inferiority: as we all know biological traits are the limits of what an individual might make the best of in terms of transforming it into behaviour. other factors that contribute are hyperlibidinousness (though they may have little sexual interest and simply prey on the sexuality of men, as women do) and trauma, which add to the 'acceptability' of such behaviours and mental complexes in the afflicted person's mind. if one considers all these traits together it is natural homosexuals end up acting like they do.
tldr; homosexuals are dysgenic beings with no place in a society who try to force themselves into a role in it, hypersexual men and/or beings who prave on the base desires of other men.