Won’t really be a relevant issue in 20 years. Genetic engineering will come at an EXPLOSIVE rate. We will be able to map individuals’ genomes in a few hours, NOT years. Editing of genes will be done with the ease of editing computer code nowadays — and that includes virus-cleaning. We will know exactly what in the genetic make-up makes a gay. And parents won’t want it at all. There were once many good reasons to grant lepers civil rights. Lepers couldn’t help their disease, they could take preventions to avoid harming anybody else, etc. There might have been a movement started, but in the meantime we cured leprosy!