First, it's very unlikely all people will become aware of it. Our culture has made it taboo to even think in this direction.
Second, nothing will change. People will still behave based off of their instincts and underlying biology. Awareness of the underlying biology doesn't change anything. Men are very much always attracted to young women with nice curves even though they are well aware that this attraction is just an irrational biological instinct. Awareness does not change behavior, therefore, society will not collapse.
First, it's very unlikely all people will become aware of it. Our culture has made it taboo to even think in this direction.
Second, nothing will change. People will still behave based off of their instincts and underlying biology. Awareness of the underlying biology doesn't change anything. Men are very much always attracted to young women with nice curves even though they are well aware that this attraction is just an irrational biological instinct. Awareness does not change behavior, therefore, society will not collapse.