Let’s use Darwinian Natural Selection Theory. All life exists to REPRODUCE itself. Defective Non-Reproducing offspring are Eliminated from the gene pool.
How could the So-Called “Gay Gene” be passed on, generation after generation, if the possessor of that gene were not able (willing) to merge it’s genetic material with a suitable FEMALE partner.
Evolution (if true) is supposed to produce an ever more adapted individual.
If you are too stupid to know which hole to put it into, Natural Selection would quickly erase your kind from existence.
Same Sex attraction tendencies are the result of Pscho-Social Influences, Not a complete “wiff” on the part of “Natural Selection.”