How does widespread contraception lead to declining birth rates? Well if the life-giving potential of sex is pervasively removed from the picture, a cultural mindset is gradually fostered in which children themselves are pervasively removed from the picture. They tend to be viewed not as gifts but as liabilities, spoilers of a pleasurable lifestyle. We might have one or two, if that would be pleasurable to us, but after that the norm is to reject them.
How does widespread contraception lead to widespread abortion? I credit Dr. Jennifer Roback Morse with summing up the motto of our culture of sexual liberation this way, and keep in mind that our culture of sexual liberation was made possible only by our culture of contraception: She says ours is a culture in which, “all adults are entitled to unlimited sexual activity without a live baby resulting.” I’ll say that again, “all adults are entitled to unlimited sexual activity without a live baby resulting.”
What Dr. Morse touches upon is our culture’s prevailing disconnection between sex and babies. Before contraception was king, the prevailing assumption was that a baby was a natural consequence of sex. If you chose to engage in sex, you knew it could result in a baby. You might not have wanted that to happen, but you assumed that it could happen. If a baby did result, it was because of your freely chosen action, and so you were likely, not necessarily, but likely, to feel a certain kind of responsibility toward that child.
The contraceptive revolution changed all that. It led to the prevailing assumption that babies really shouldn’t have anything to do with sex. That is, not unless you wanted a baby to have something to do with sex, not unless you allowed that. Or as Dr. Morse said, not unless you’re into that kind of thing.
Now couples who think this way do know that keeping a baby out of the picture doesn’t just happen by itself; you have to do your part. You have to do something to the sexual act to make sure that a baby won’t be conceived. That’s what, quote unquote, taking responsibility for your actions now means with respects to sexual activity.
But if a couple has this kind of attitude, then when the contraception fails, as it often does, and there’s a pregnancy, they’re not going to tend to think the baby’s there because of their actions. They’re going to tend to think the baby’s there in spite of their actions. In other words, their mindset is not so much that this is their child that they conceived. Rather, they’re going to tend to think it’s an invader that they failed to repel. This kind of thinking is likely to foster quite a different sense of what’s the responsible thing to do next.
Now, I realize, we’re not talking about abortion, yet. Not everyone who smokes gets lung cancer, and not everyone who uses contraception goes on to have an abortion when it fails. What I’m saying, though, is that contraception, by its very nature, and as a broad social phenomenon, tends to incline the heart of a nation toward abortion. As John Paul II put it in "Evangelium Vitae," Latin for the "Gospel of Life," the contraceptive mentality strengthens the temptation to abort. Contraception and abortion are not the same thing, but as John Paul put it, they are as closely connected as “fruits of the same tree.”