Why are religious moralists so preoccupied with sex? Attitudes on sexuality are far more predictive of religiosity than attitudes on charity, social justice or any other measure. Religious scriptures abound with rules and restrictions aimed at controlling women's sexuality in particular. Is the current religious obsession with sex just an unfortunate result of religion's male-dominated history or are there deeper forces at work? On this episode the doubtcasters review recent studies which illuminate possible procreative strategies underpinning religious patriarchy. Also on this episode: the supreame court hears gay marriage cases, the Pope Who Stole Christmas and fan favorite Ed Brayton joins us to discuss his new book about the violence and intimidation many secular activists face when defending the separation of church and state.