I’m generally somewhat reluctant to write about sex here on Medium. As best as I can tell from the stories the Medium algorithm recommends for me, most writing on sex is done by women and it’s not at all clear that a man’s perspective is regarded with much tolerance these days. Furthermore, while I adore sex and have always been more than usually active (in all senses of the term), I also feel that for the most part it’s a private matter between two…