Before I explain why your analogy doesn't work, let's hear an actual response to the thought experiment I presented.
You asked what one would do, rather than what one should do; you failed to demonstrate that a woman getting an abortion was choosing to save one born baby’s life over a thousand unborn baby’s life; and you completely failed to finish your postulation with priors or posteriors.
If I say you shouldn’t beat dogs, and then you say “But you wouldn’t stop someone from beating a dog if the building were on fire!!” you haven’t really addressed the moral validity of beating a dog. Rather, you would have demonstrated that you’re uncomfortable with defending dog beating and attempted to make me feel uncomfortable for opposing it.
So, you STILL haven't answered the question...