That's the thing. Every generation thinks it is the first generation to discover sex. We act like this question never came up in the past 2000 years, anytime, anywhere. Obviously, it must have given the breadth of human experience over hundreds of lifetimes. If our ancestors consistently said NO, what makes us think we are so much wiser?
Wow, an excellent observation. And it points to the arrogant attitude of this current, evil crop of "progressives" who believe they are blessed with superior moral insight that thousands of other over 2000 years weren't capable of.