Modern biology supports the view of immediate hominization. In any case, since we cannot empirically observe ensoulment, all believers must logically opt for the alternative that causes least harm, giving the unborn the benefit of the doubt. Things cannot be preserved or cleansed from sin, only persons. Thus, one could argue that like Mary, all are persons at the very first moment of conception. All human persons, from the womb to the tomb, are deemed as possessing a precious and irreplaceable dignity.
All human life is incommensurate and beyond any utilitarian value.
Catholic principles that emerge from the Gospel of Life are universal and absolute. Past application was sometimes questionable because the data from the other sciences was imperfect. The universal condemnation of abortion throughout all Christianity and its history is unassailable. They not only support abortion but other perverse matters as well. As they do with so much else, they trivialize the dignity of the human person and assault the Gospel of Life.