"Japan is a strange, strange place. I would never want to live there. The Japanese, as a whole, basically seem to be perverts."
Probably because there is so much rigid conformity.
Victorian England, similarly, was famous for its pornography. And one out of every 40 London houses was a brothel.
Arab societies, which are extremely repressed & abusive, seem to produce these types. Maybe the tighter the laws, the greater the obsession with sex.