Nice irrelevant and factually incorrect speech, since there are sterile women, transexual men who can give birth, and giving birth is not the same as being a mother, as the thousands of foster parents show again and again.
And is also beside the point, since abortion of a zygote or a foetus, doesn't involve children or motherhood at any point.
My suggestion is quite simple. Devote you energy to improve living children lives. Maybe some of the women who doesn't want to be mothers or have more children would change their mind and risk the bringing children to this world if they think the children would have a chance of a good live. Otherwise, bringing them just to suffer is plain sadism. And I mean it.
Free food, free healthcare would make a difference. But who knows? while you are willing to sacrifice your life for hypothetical children, you might not want to sacrifice your tax money for real life children that belong to others. XDDD