I don’t believe that sexual behaviour has changed that much since the pill. I think that is a hopeful belief amongst some, but history proves those who believe that we have substantially changed over time are mistaken.
Sorry, but I am sure you can't substantiate that with anything like facts, It's all "I believe," "I don't believe."
There are surely constants in human nature as long as the human genome exists. But instinct operates in an animal as a command: in a human, as a persistent suggestion.
As for sexual behavior? Instinct supplies a general itch: society, ideology and behavioral contagion conspire to lay out 1, 2, 3, 75, 150 ways to scratch it.
“I don’t believe that sexual behaviour has changed that much since the pill.”
I think I’m going to go ahead and believe my lying eyes.
I was sexually active before the pill.
I observed a significant change.