Not eveyone on Planet Earth is as obsessed with f*cking as the writer.
There are a few men and women scattered around who are more interested in pure spirituality.
Not many, these days, but a few.
You don’t have to be interested in spirituality per se, but simply in life. I can’t understand why these nutcases have limited their lives to a nervous sensation. Sister Ugly was busy praising masturbation, so her “thought” didn’t even pretend to involve any emotional or even physical connection with another human being.
That’s exactly why Our Lord tells us, repeatedly, that there are other things that are much more important (short summary of the Gospels!).