Ethan was facing the fact that he belonged to a species fast on its way to extinction. How can you be a success as a dirty old man if people aren't shocked by your lechery? In the post-Kinsey world, he was just laughed at.
Then Ethan discovered he had strange powers. Whatever he wanted, he not only got--but women were eager to give it to him. He turned New York into a one-man Roman orgy.