Is it time to wheel out Professor Lord Robert Winston, you know, the world renowned expert to reiterate once again that for humans sex is binary?
As for that matter is sex and reproduction for every living creature on this planet, including plant life, though excluding some single celled organisms. So the mammals, insects, birds, fish, amphibians, reptiles, all the weird and wonderful creatures that live in the depths of the oceans, the cold blooded, the warm blooded, the crawlers, the slitherers, the burrowers , climbers, flyers, hoppers, the two legged, four legged,six,eight and ten legged, the multi legged and the no legged. All binary. We live on a binary planet, it is how we have all evolved for millions of years. Large and small gametes. Female and male.