You said it incorrectly, - it's the possibility of human life, they all don't make it. Even your God commits abortion, but when he does it they call it a miscarriage. In fact most pregnancies do not come to fruition in the natural world., If they did this planet would be either extremely overpopulated and close to death now or completely dead.Choice means there is a priority. Once again, the reason some are against abortion is because of the belief that human life is the greatest priority.
As far as a woman can have more children if she wants to, the one thing she cannot have is the unique life she killed. I am almost sure you would never tell a grieving parent, "Just have another one" because you understand the one that was lost is unique and irreplaceable.
Human life is the greatest priority. How does that change the discussion?