Wrong. sexuality has flourished in numerous species (it is not confined to humans), as reported by peer-reviewed science, despite the fact that sexuals don't procreate. What does that tell you? That sexual preference is probably a polygenic effect (that more than one gene is involved), and that it is NOT selected for or against by natural selection (it is a selectively neutral trait), otherwise it would have quickly left the gene pool.
Please don't abuse and misunderstand Darwin's theory, or genetics, for your own personal agendas. What are you studying? It sure isn't evolutionary biology or genetics.
Nice, open-minded at ude to others' rights they teach you at that college.
