And, attitudes toward contraception have changed. In the 1930s, prior to Humanae Vitae, nearly 65 percent of Americans lived according to the Church's teaching against contraception. Today, that number is down to four percent. As freedom-focused as the 1960s were, it is not until the 1990s that advertisements for condoms and other forms of birth control are commonplace. That's because today, it is seen as responsible to use a condom, and it is viewed as an infringement on freedom to imply that single people should not have sexual relations.
Contraception is wrong because it defies the unitive and procreative elements of sexual intercourse.
At one point, there was discussion among Catholic theologians that the birth control pill might not be morally wrong. This occurred in the 1950s and 1960s. In spite of the wishes of these dissenting theologians, the teaching of the Church was not changed and was reinforced in Humanae Vitae . Because although the face of contraception had changed, its nature and intention had not. The contraceptive pill, as well as all other forms of contraception, eliminate the procreative and unitive elements from sexual intercourse.