Ok, look. I am not one of those people that thinks "trusting medicine" is somehow "unfaithful" or "not trusting God." It's quite clear to me that medical skill, knowledge, and wisdom is one of the gifts God has given this world to treat and cure illness, alleviate suffering, and extend life.
This bothers me: "If you're on the birth control pill, there's no medical need to have a period every month."
First of all, the birth control pill acts to suppress a natural function, ovulation. It does not treat a disorder. (although it may alleviate the symptoms of one)
I am turning into one of those naturalist "crunchy cons", to be sure, but if having a period is not inextricably linked to ovulating (which it's clearly not, because someone on birth control has a period but does not ovulate), then perhaps, there is, in fact, a reason to have one.
Scientists may not know what that reason is, but it doesn't mean that there isn't one. In biology class, we always learn about form and function being linked - that if something is shaped a certain way or does a certain thing, it's for a reason. Which is basically an acceptable-to-the-public-schools way of saying, "maybe God does know what He's doing, after all."
I for one, find it odd that anyone would actively force artificial hormones and other chemicals into their body, in a manner that suppresses not one, but two, natural bodily functions, for the purpose of having sex without the responsibility of a child.
It just seems like a strange calculation, to value "free love" over one's health.