You say that 20 year old women are dating 25 year old men, and that because of this, 20 year old men should date 15 year old ladies. But if you keep going down that chain of logic, who are the under 5 year old boys going to date? All thd girls their age are going to be snatched up by 10 year old boys and everyone younger than them hasn't been born yet! Age gaps don't work!