Also, if the conception was due to a voluntary act, and not by victimizing the mother, then are you willing to accept greater restrictions on abortion? if not, then all abortions are the same to you, and we don't need to address the special cases in which the woman was victimized, because you want abortions in all cases no matter what.
The reason Humanae Vitae should not be codified into law is that it sets forth non-consequential morality (NCM...victimless morality). The Church can legitimately address NCM with its powers of persuasion; but the State should not address NCM (victimless crimes) with its powers of coercion. Separation of Church and State means no codification of NCM.
But, CM, or consequential morality, is different. It can be legitimately addressed both by the persuasion of the Church and the coercion of the State. There is no controversy on this point. Every sane person believes that theft, assault, burglary, murder (all condemned by secular CM) can legitimately be made illegal by the State regardless of whether the Church condemns it as sin or not. Abortion is just one type of homicide. You cannot argue it is not without denying science, or denying basic human rights to an individual (the child).
Moreover, we do not, as a general rule, allow a victimized person to take out their hardship on another innocent person. Abortion is an exception to that rule. You are arguing for that exception to the normal rule. We have allowed, and we still allow, many evils in society. We used to allow slavery. We did away with that, even though I'm sure slavery supporters were able to use polls of Christians to support slavery. Hopefully we can do the same with abortion.
Abortion has an innocent victim. We can ans should stop making more victims, and we should focus on helping mothers with crisis pregnancies.
Off to Vegas now. Pardon typos. I did all of this post on my phone.