Yeah, I mean I think it was a great ending. The only other way to end it would be to have him die while fucking, but he himself would have to die too so that wouldn't work since he writes from experience. He got to live out his dream of having women desire him, and he still gets to be a selfish son-of-a-bitch. If he wasn't famous he could still be a selfish bastard, but women wouldn't seek out his company. Fame as advantages I guess. This is the real American Dream: to be a selfish as you can, and still make a living and get laid.