It just seems like you're not even registering what the other side thinks. Like, a total non-awareness or non-acknowledgement of what the disagreement even is.

You're simply assuming the conclusion - that the fetus/baby isn't a child in the normal sense the way a born baby is a child.

The rest of your arguments flow from the notion of how ridiculous it is to make a woman sacrifice to save a non-child fetus. And from your premises, you are correct.

But that's missing the point entirely.

Pro-lifers don't think it's a non-child fetus. They think it's a child. For them, it's the same as sacrificing to save the life of a born baby.