Once Upon A Time All good stories should start that way. Once upon a time, I had a friend confess to me that she had once dated a guy, for a short period of time, and despite his prowess in the bedroom, she found he was too good.
It seems that he could pound away for a considerable amount of time (I never asked for exact details). And I was not sure what the problem was. She tried to explain, but personally, I did not get it at the time.
Then I saw this article today How Long Should Sex Last — Does Time Really Matter?
And now I get it. At least theoretically.