It is hard to imagine a world where the persons of one of both sexes begin to be scarce. Something like that, might happen on a post-apocalyptic scenery. By that time, the human race would have its days numbered, unless the scientists get to develop some alternative method, to perpetuate our species. Or maybe mother nature itself, manage to find a way to modify our procreation ways. Before our very eyes, might be ocurring some of those changes, but are hard to notice, since they occur very slowly. But, is better to leave this, for the science fiction stories...
Rome invaded by the Barbarians. By Ulpiano Checa, 1887. Source: Poniol60. |