Maybe growing up in the Seventies, with a mum who read Spare Rib, subconsciously convinced me that men were the new second sex - that they'd had their own way in bed for thousands of years and that now women should set the pace.
And, yes, most sexual abuse is still perpetrated by men.
But The Sex Diaries reveals a much more tender, intimate truth about men in relationships.
Men who aren't, in fact, surfing internet porn every night, or resentfully putting up with the middleaged wife while they fantasise about the hot 21-year-old next door.
There's only 'I'm having the sex life I want' or 'I'm not'.