I have actually read a very bizarre argument against this idea because it would actually encourage abortion. The example goes as follows. If a mother truly loved her unborn child, truly loved her, she would not want to take the risk that her child might grow up and through the child’s actions the child would either be condemned to purgatory, or even worse the child could possibly go to hell. To prevent this possiblity, the mother, out of pure love for her child, would abort her child to assure that the child would go to heaven, even at the risk of her own soul, which in a sense would be the most selfless loving act one could perform, thus ensuring her own salvation as well.