The dynamic in our society is not that she brings the power and the money. The dynamic is that he does. So those relationships tend to be somewhat more unusual. I think there can be a great deal in these relationships, but it's less common because it reverses our social pattern. It's not hard to understand what somebody finds attractive about youth.
Young people are beautiful.
They've got great skin and lots of energy and tremendous enthusiasm for the world. Youth is attractive, whether it's female or male. I suspect that's because, among other things, men have a larger pool of bridal candidates to choose from. Guys can certainly, without raising anybody's eyebrows, marry somebody up to five years older than they are. They can also marry somebody up to 15 years younger than they are without anybody batting an eye.