Homo sapiens is the species that invents symbols in which to invest passion and authority, then forgets that symbols are inventions.
Are we the only members of the Galaxy that can actually understand what a galaxy is? Could Homo sapiens really be the pinnacle of Creation - the cleverest critters in the cosmos? If we learn the answer is 'no,' that would affect our philosophies forever.
Admittedly, a homosexual can be conditioned to react sexually to a woman, or to an old boot for that matter. In fact, both homo - and heterosexual experimental subjects have been conditioned to react sexually to an old boot, and you can save a lot of money that way.
No matter how inured you get to atrocities, you're still always stunned and shocked by how cruel and wasteful Homo sapiens can be.
I will always admit immediately to what's obvious, which is that Homo sapiens is inherently erotic or inherently sensual from birth.