I respect your point of view and as I said it has some advocates in the evangelical community as well. By means of medications or things that have the action of medications, many perfectly natural things can be deferred to serve one or another purpose. Drinking coffee can defer sleep so you can study or work more. Swallowing pills containing certain hormones can defer ovulation so that you will conceive children when your family is in a position to support them. (The immature eggs remain there in the ovaries, they do not die, but also do not mature and come out until the hormones are stopped.) Some are horrified at the thought of either or both, even though intercourse could also be timed such that the possibility of pregnancy is mostly evaded, and hardly anybody complains that THIS is evil.
Anyhow — surely procreation is one of the biggest mysteries of which mankind is aware and some very understandably do not want to tread on that holy ground at all.
YOur last sentence, my brother, shows a good insight. May you have a good Lent and may the Lord have mercy on all of us, for we are under judgment.