I don't think we can justify abortion rights by telling ourselves silly lies. An unborn child is unquestionably alive, and human.
That doesn't mean I am opposed to abortion rights--even though I regard abortion as in most cases a bad thing, something that is better avoided. (I say "in most cases" because there are fetal conditions which will result, if the child is given birth, in its suffering horribly for a short time, and then dying. Refusing an abortion in such a case is simply torturing an infant to make a political point.)
Where I draw the line is at the idea that the government should impose MY views on someone else, when it's not any of my business. The pregnant woman is the one person who has a personal stake in the matter AND is capable of making the decision. I don't see any excuse for governments to treat pregnant women as property.
Besides, if governments--and self-proclaimed "pro-life" politicians--really wanted to do anything about abortions, they could do a great deal by simply acknowledging the woman's right to make the choice, and seeing to it that each woman facing that choice has access to the resources to give birth, and then to raise, feed, clothe, house, care for, and educate that child--without taking food from the mouths of her other children.
But these same politicians are the ones who have spent about the last four decades taking those resources away from more and more of the population, so they would have more money to stuff down the pants of rich people. The abortion rate is what it is because the pro-life movement promotes abortions.