After spending the day reading a few articles about, erm ummmm, sex two things jumped out, 1. On average sex between a man and woman lasts 9 minutes (seem a little short to me but I like to spend time enjoying things ), 2. On average a woman needs 13 minutes of stimulation to climax (seem a bit short but I have a cruel edge sometimes ). Surely this means many women aren't reaching orgasm though sex alone. P.s. I know both of these figures are very much citation needed and probably aren't really that comparable.