“... isn’t IVF a work-around of what nature proposes?”
Hmmm, so what about organ transplants, medications that prolong or save lives, life support systems, and on and on. Many of those people just decades ago would have died. Aren’t they a “work-around” of what nature proposes?
Yes, they are. I’m not advocating the supremacy of nature, however, so it really doesn’t bother me.
Well, I might as well be the one who says it, since you brought it up.
There's a lot of discussion/scandal (and not just in the Catholic theological realm) that 'brain death' is a very flimsy scientific concept. There is talk among religious scholars and bioethicists about trying to define things more carefully so that innocent people are not 'assisted into death' earlier than they should be.
No, you haven't heard about it yet, but the talks have started. Perhaps in the next year or two the press will discover it.
FWIW, there are many secular people who have concerns about being donors. Currently, I am listed as an organ donor. If the Church comes out against it with sound arguments, I will change that designation. And yes, I will also not accept an organ from a 'brain dead' donor at that time as well.