I read your answer concerning the question about the Church's views on fertility drugs. Your answer was done very well but it's incomplete and may be misleading. The main question concerning fertility drugs is what happens with the fertilized eggs [humans] that are not implanted, intended to be used or when there is too many implanted, [selective elimination/abortion]. Multiple fertilizing of eggs is normally necessary and can't be avoided by the very drug fertility process. Isn't this the reason the Church is against Fertility drugs? Can the issue be separated? To address the one without the other is a problem. I would appreciate your reply.Thank you for your comments and questions!
As a point of clarification, the Church is not against all fertility drugs, nor is she against all medical interventions that aid in procreation because not all of these result in the misuse of fertilized eggs (embryos) or the substitution of the marriage act. As the paragraphs I cited indicate, homologous forms of artificial insemination (in which the sperm and the egg come from the married couple) would be permissible as long as they do not replace the conjugal act or impede upon the achievement of the required ends of the act (unity and procreation).
Also, my understanding is that, with interventions such as these, there is usually no misuse of embryos. So, your complaint about the multiple fertilizing of eggs and the abortion of the resultant embryos would not apply. However, such misuse does take place with In Vitro Fertilization, which is why the Chuch is against this practice.
I know all of that was a mouthful, but I hope it helps clarify this matter for you. For more information on bioethical matters such as this, go here.