Despite the fact that both positions had well crafted and comprehensible claims, I have officially reached the conclusion that choosing sex through preimplantation genetic diagnosis is not ethical.
Using PGD for sex selection will not improve the world as a whole, and is unnecessary. It does not solve any of the world's problems that people currently face today, and its use should be unneeded compared to technologies that solve hunger problems, climate change, and other concerns. Many prospective parents who have used/are planning to use this reproductive technology also base their reasons for choosing a boy/girl over stereotypical qualities associated with that gender. Some choose males because it is traditionally associated in their culture that males should pass on the family legacy, are strong, can do harder tasks, and other aspects. Others choose females because they want to dress to their child in pink, help them sew, and teach them tasks identified as "feminine" in society. However, a certain gender does not define who somebody is, and society should appreciate their children and their unique qualities rather than boxing different qualities into only one gender.
Embryos are much like humans in the earliest stages of development, and their destruction due to their gender can be prevented. Embryos are made up of multiple cells, and when it successfully grows, will become a person. Interfering with embryos because they are not the "gender" that one wants is a reason that does not make sense. There is no "wrong" or "right" gender, and embryos should not be destroyed solely on the basis of the presence or absence of a Y chromosome.
The future of preimplantation genetic diagnosis might lead to unnatural changes, such as gender imbalance in different areas. China and India, for example, strongly favor males over females. Because of this mindset, there is a disproportionate ratio of males to females. This is one of the many cons due to the introduction of choosing embryos, and the gap between genders might even get worse. Also, children born due to this technology might feel pressured to live up to their gender stereotypes, thus creating distress. Nobody should have to prove themselves by standards set up by society. People are unique and their gender does not define who they are, and PGD technology says the opposite.
There are not many statistics released for sex selection through PGD, but releasing official statistics about embryos would help reaffirm my decision and convert people to be against sex selection through PGD. Many embryos are left over from the process, and the unwanted are destroyed. The embryos left of the "right" gender are either frozen, donated, or destroyed as well. Knowing exactly how many embryos are destroyed compared to ones implanted may shed light on this process and its flaws.