First I'll admit that I don't fully understand your scenarios, as I find your phrasing confusing. But I also find your analogy over the top. Donating your heart and blood? Come on! Loaning your body for a finite time is far different than giving up organs indefinitely. My analogy is definitely closer to the real thing. And as consuming as pregnancy is (as I lie next to my pregnant wife, typing this, and not revealing the difficulties she has had lately), generally the difficulties are not nearly as bad as you convey in your analogy.

Money issues were not my intent either, though I can see how one might interpret it that way. My intent was to simply draw in the fact that it is draining on the couple, but the drain does not justify the euthanasia. See my post with the statistics to see my view on the inconvenience of pregnancy, that it is not always about money, but that it is nearly always about convenience of some sort.