Fund science to the point where upon the onset of puberty/sexual maturity, a few (3 to 5) dozen eggs from every female can be harvested and kept alive in a state of limbo for decades. Also need to preserve a few million live sperm from every male for decades.
Then, surgically sterilize everyone after their "harvest" is complete. Vasectomy for guys. Tubal ligation for girls.
Perfect solution.
No more unwanted or accidental pregnancies. No more pregnancies from rape or incest. No more abortion. Ever. (just std's to worry about)
Plus the disgustingly unnatural need for birth control is no longer an issue either. (std's are only an issue for sluts and whores)
Any time a couple wishes to have a child, they go to the "depository" and have their designated egg and sperm mixed together in a test tube and implanted into the woman's uterus.
A bonus to this new system is that women past menopause could still have a new baby.
If you add in Kal'stang's incubation "vats", you could potentially keep having babies even after you die.
Just leave your sperm and eggs to your children in your will, and they can keep making babies for you.
So to highlight:
1) Harvest sperm and eggs at onset of sexual maturity.
2) Suspend indefinitely for use at any time over the next 5-10 decades
3) Sterilize everyone surgically after deposits are collected
End result - abortion stops being a hot-button issue for everyone for the rest of eternity.
Absolutely zero unplanned/accidental pregnancies.
What could possibly go wrong?