I like Kate Millet's take on the moral double standard for males and females.
She puts forward a convincing analysis that during the Victorian era, for example, women were forcd into the role of "moral guardians" for the family, and for society, all because:
"men felt that somebody should be doing it but felt it was too tedious for them to do it themselves" (or words to that effect)
So men get to do whatever the hell they like and aren't punished that much, whereas women are punished disproportionately for the tiniest discrepancies. Society expects more of women, as though they "should know better" and yet when it comes to making law and policies women "aren't fit" to know what's best for society