The short answer is that no one knows. That includes even the authors of the paper on the GSS results. Factors such as more people are living with their parents, fewer marriages, and an aging population alone can’t fully explain it.
Why were the 90’s hornier than today?
I can’t stop thinking about this tweet from an account with 1.5m followers: “Men, Do not sleep in a woman's house. Do not even contemplate having sex with her in that house. That is disrespecting yourself and polluting your dignity. Stay in your house. If she wants to come, she will come. Don't lose your sanity because of sex.
cathyreisenwitz.substack.com