Gotcha--
I find your hypotheticals quite troubling and sad...
As parents, of course we want the very best for our children but, even if I were to believe with 100% certainty that I know what that is and isn't, I can't imagine choosing for my daughter doing what I thought right and being miserable over doing something I disagree with and being happy, or, worse yet, choosing death for her rather than allow her to make mistakes and a "mess" of her life.
As gut-wrenching and heart-breaking as it can be to watch a child do so, I would never wish to add to that by rejecting her. Alive, there is always hope: messes can be cleaned up, sins can be forgiven, mistakes can be learned from, amends can be made. But dead? Game over. And even if you believe it preferable that someone you love die before Armageddon so that they can be resurrected, that is no guarantee that your child will chose any differently then.
So I say live and let live. Focus on the kind of love that is stronger than fear and stronger than prejudice.
--Merry