Yeah, don't look between your legs and try not to touch yourself when you use the bathroom. The great offence it's bound to inflict upon you may well scar you for life or turn you into a rapist or murderer.
Now imagine seeing
OTHER PEOPLE NAKED
I'll have to write a stern letter to my most conservative politician at once so that he may implement mandatory chastity belts on all citizens. Procreation may only take place through artificial insemination! NO MORE NUDITY! NO MORE SEX!
Clearly, the human psyche can't handle it.