Homosexuals are worthless biologically speaking

You clashed evolution and biology into the subject, but going over the process of adaptation. You have two living organisms, one eats (example) Yellow food, and the other red food, if either of those organisms where to run out of food, they would have to adapt and eat the yellow or red (depending on the one that runs out) that being said and explained, if Homosexuality could have an adaptation progress. This could take millions of years but, our bodies can adapt to reproduce both heterosexually and homosexually. We see homosexuality as worthless now, but who are we to say that the future generations or generations millions of years into the future will not be able to reproduce? The process of adaptation is real, and has been proven, so are humans denied from adaptation? No they are not. I firmly believe that humans can evolve to reproduce homo sexually.