Masturbation was once considered more offensive than child abuse
I've written many articles based on Victorian/Edwardian advice books. There was advice for everything, from how to improve your breast size to keeping your man faithful, all written with earnest authority by "experts" of the day. In these old books, I noticed that one subject appeared over and over, usually shrouded with dire euphemisms: The Solitary Vice. Self Abuse. The Vicious Habit.