It's now more than 50 years since the revolution began. Sexual "liberation" has been endlessly ballyhooed by the national media, promoted in the movies, embraced by Playboy guys and Cosmo girls as a freedom more delicious than Eden's apple. No American under 40 can honestly remember a time when sex on TV was taboo, when "living together" meant married, when "gay" meant happy, and when almost every child lived with both parents. If truth be told, the revolution has been a disaster. Before the push to loosen America's sexual mores really got under way in the 1950s, the...