A writer posted this comment on another site.
It says it all ;
British anthropologist J. D. Unwin, whose 1934 book, Sex and Culture, chronicled the historical decline of numerous cultures. Unwin studied 86 different cultures throughout history and discovered a surprising fact: No nation that rejected monogamy in marriage and pre-marital sexual chastity lasted longer than a generation after it embraced sexual hedonism. Unwin stated it this way, "In human records there is no instance of a society retaining its energy after a complete new generation has inherited a tradition which does not insist on prenuptial and post-nuptial continence."
Unwin also said that it takes three generations for this phenomenon to occur, so if we start counting from 1960, and a generation is twenty five years, we end up with 2035 as being the end of our civilization. Something to ponder as we enter 2011.