Okay, let me rephrase it. I'm CFBC, so my opinion on this matter is probably not objective.
Personally, I don't see the ability to have kids as a medical necessity. I don't have kids, and my life is ticking along nicely. So why should insurance be required to pay for somebody else, gay, straight, bisexual, married, single, or Martian, to have kids, particularly when the government upholds the right of employers NOT to pay for my wife's birth control, ie my ability not to have kids?
(Yes, yes, I know we reached a half-baked compromise where the birth control is covered but not *technically* paid by the employer. But you see my point.)