Contracepted sexual intercourse refers to acts of sexual intercourse in which at least one of the persons involved has deprived the sexual act of its procreative potential by actively attempting to prevent a process essential to natural human reproduction from occurring. As such, contracepted sexual intercourse is intrinsically evil and always offensive to God since engaging in this kind of sexual act is always inherently ordered by the very nature of the act towards closing the sexual act towards the conception of new life, depriving the sexual act of its procreative potential, and depriving the sexual act of its proper meaning.
God has designed human sexual intercourse to be an act in which a married man and his wife become one flesh and cooperate with God in bringing forth new life. The choice to engage in contracepted sexual intercourse goes against the natural purpose of human sexual intercourse and the will of God since contracepted sexual intercourse seeks to close the act of sexual intercourse to the possibility of new human life. Furthermore, God is offended by acts of contracepted sexual intercourse because God is the creator of new human life, because those engaging in contracepted sexual intercourse are seeking to prevent the conception of a new human being, and because some couples engage in contracepted sexual intercourse at times where God otherwise intends to create a new life. Additionally, God is offended by the deaths of newly conceived human beings that result from the use of abortifacent contraceptives, which can also act by preventing implantation from occurring if the abortifacent contraceptive fails to prevent conception from occurring.
Up until the Lambeth Conference of 1930, the use of contraception had been considered to be morally wrong by every Christian denomination. At the Lambeth Conference of 1930, the Church of England decided that the use of contraception by married couples could be morally licit in circumstances where there are sufficiently serious reasons to avoid parenthood and where there is a morally sound reason to avoid complete sexual abstinence. Since then, the use of contraception had become acceptable in the eyes of many Christian married couples and more widespread among Christian couples. The Catholic Church still continues to uphold its teaching against contraception, but there are many Catholics who choose to engage in contracepted sexual intercourse in contradiction to the Catholic Church’s teachings. The widespread acceptance of contraception by those who profess to be Christian, even by those who are not Catholic, still does offend God, even though many of the people who consider contraception to be acceptable do not view contraception to be offensive by God.
The acceptance of contraception by many Christians has had widespread consequences throughout the world. First, the acceptance of contraception has led to an increase in sexual activity outside of marriage as well as an increase in sexual activity within marriage by married couples at times where the conception of a new child is not desired. Second, the increased availability of contraceptives, the availability of more reliable forms of contraception such as the birth control pill, and the increased acceptance of contraception have enabled couples to engage in sexual intercourse without having to think about an unplanned pregnancy, but no form of contraception is foolproof protection and the possibility of unplanned pregnancy is still there with contraceptive use. Third, the increase in sexual activity that has resulted from the acceptance of contraception has led to more unplanned pregnancies and an increase in the rate of sexually transmitted disease transmission. Fourth, some of the unplanned pregnancies are being aborted, but this consequence is the result of an increased acceptance of contraception, an increased willingness to engage in sexual activity in circumstances where the conception of a new child is not desired, an increase in sexual activity as a result of widespread acceptance of contraception, and the legalization of abortion in most of the world. Fifth, there has been an increase in the divorce rate since the 1960’s, and acceptance of contraception, the legalization of abortion, an increase in childless marriages, and extramarital affairs have all played a role in this increase of the divorce rate. Sixth, the acceptance of contraception has led to a lowering in moral standards and reduced birth rates in countries where contraceptive use is widespread. The bad consequences of the widespread acceptance of contraception have turned out to be worse than what was predicted by most people 50 years ago.