I don't think you really got my point. If you truly, honestly believed that doing something resulted in the death of a child, of course you'd want to prevent anyone from doing it. We already have a law against murder, and surely you wouldn't say "then they just shouldn't murder people, but don't try to impose their beliefs on me!"
The point is that, from the perspective that fetuses are children, restricting abortion is the most logical and consistent approach. This is unavoidable, and you can't change their minds if you don't address this. The way to sway a pro-lifer, then, is to demonstrate that a fetus doesn't have personhood.