Let's go back to the pre-Renaissance period. Not a whole lot of works of art that sticks out with great works of nude people. Then the Renaissance hits and bam, nudes all over the place. People started to give a damn about the magnificence of the human body. Why do you think there was a sudden explosion in the number of nudes? To only show how beautiful the human form was?

To believe that is to exist in a naive bubble. We use sex appeal to sell everything under the sun. Famous artists used the nude form to draw attention to themselves to find patrons. Do you think all those cardinals, bishops and popes were celibate? The Papacy was all about power and following power is sex. The nobility and merchant class under them had money to burn. They wanted art that was both significant and titillating.

David, the most famous statue in art history (seriously, it's the most famous), is a giant uncircumcised Jew in all his naked form. Coincidence that Michelangelo was gay? No, it's not. The man loved the naked form.