I hate, absolutely hate to refer to Trump on that, but he once answered a question on some topic amazingly well. Roughly:
"For centuries it was like this, and everything was fine. Now, suddenly, people have a problem with it."
For centuries people used common sense to understand whether their partner wants sex with them or not. Now, all of a sudden, people are confused. ( ͡° ͜ʖ ͡°)