Arthur Caplan, an eminent bioethicist and Director of the Center of Bioethics at the University of Pennsylvania, sees this method as preventing infanticide or abandonment. Sorting sperm is far better than leaving babies on the hillside. For once, I don't think this is a bad thing. There is no reason for haste and every reason to be cautious. 3 Caution, however, is not always encouraged in a market economy.
Silver notes the technology for germ line genetic manipulation already exists.
Gender is a heritable trait, but obviously not a disease. Yet in societies that value male life over female life, two X chromosomes may be a disadvantage. Within the answer to this question lies the essence of a thousand more. A careful consideration of today's choices, as Dr. Zirkin implies, is something society cannot afford to forego.