Save Marriage? It's Too Late.

here is a bit of an excerpt

Today, though, sexual intercourse is delinked from procreation. Since the invention of the Pill some 40 years ago, human beings have for the first time been able to control reproduction with a very high degree of assurance. That led to what our grandparents would have called rampant promiscuity. The causal relationships between sex, pregnancy and marriage were severed in a fundamental way. The impulse toward premarital chastity for women was always the fear of bearing a child alone. The Pill removed this fear. Along with it went the need of men to commit themselves exclusively to one woman in order to enjoy sexual relations at all. Over the past four decades, women have trained men that marriage is no longer necessary for sex. But women have also sadly discovered that they can't reliably gain men's sexual and emotional commitment to them by giving them sex before marriage.