In addition to the above, said people would be in a relationship with someone who doesn't want to fuck them.  In case anyone thinks "you're shallow, lower your standards and date someone who doesn't sexually arouse you" is a good idea, look at /r/DeadBedrooms.  There's nothing wrong with discrimination, it's what enabled the survival of our species. It's worked for millennia.  how dare humans select for health, fertility and good genes instead of making future generations be high-mutation-load potatoes!  How dare they!