I'm not sure if I believe this story about the ultimate in sexual ignorance:

A German couple who went to a fertility clinic after eight years of marriage have found out why they are still childless - they weren't having sex ... A clinic spokesman said ... "We are not talking retarded people here, but a couple who ... were simply unaware, after eight years of marriage, of the physical requirements necessary to procreate."

Yeah, religion is involved. Good to see not all of Europe's Christian wackos were stuffed on boats and shipped over here two hundred plus years ago. But sex is essentially instinctive. There's something else going on here I'll wager.