I find the concept of Cougars interesting from a 'moral equivalence' standpoint. Let me provide you two inverse scenarios. An older woman with a younger man is a cougar, prized for her voracious, youthful spirit. An older man with a younger woman is dirty gent plying a young thing with his money. The young thing isn't helpless. Worse, she's a gold-digger - the non-fat term for whore.
Then there's the student/teacher relationship. A male student gets props for nailing Ms. Johnson the science teacher. A young woman nailing Mr. Johnson the math teacher? She was raped.
We have really inconsistent stances on these relationships. I don't claim to know if of how to solve this, but I will admit that it makes them eerily fascinating.