I see your point, but no child can survive "on their own" until well into childhood. They're all dependent on others to care for them. Are they not human until they no longer require other humans for support, biological or otherwise? This isn't a sufficient definition of life, in my opinion. It's too simple.
This issue tears me apart. While I 100% support a woman's right to choose what happens to their bodies, I can't NOT ask myself if anyone is considering the rights of those unborn, regardless of the circumstances. These beings - potential humans, fetuses, the unborn, whatever term suits your purpose - have no voice in these matters. They have different DNA, different biological profiles than the mother. They are separate beings.
The issue, I suppose is biology. Females are designed to be incubators for 9 months, like it or not. They have no umbilical cord or placenta until impregnation. Are those part of the female body? OR the unborn? Who owns the decision to remove them? Whose life depends on them?
I support all life. To me, one must be consistent though. For my political views, the Dems seem to base most of their policies (civil, social, otherwise) on the collective rights of all humans. I vote Dem. But I'm also Pro-Life. Pro-Birth. Pro-Fetus.
A Pro-Life Democrat. I think I'm allowed to be so.