I understand your feelings about not wanting your wife back after she dumped you for a black man. Great that you no longer need your wife and are living happily without her.Fuck NO. She is gone and made that choice willingly. Time for you to move on too and find someone who will take you as you are.
As for me, I have changed and I have not been a normal husband that expects or even wants a wife that only wants to have sex with me. My mind has changed such that I am most happy watching my wife suck other men's cocks and seeing her having intense orgasms on their hard cocks. My wife's pleasure is much more important to me than my own pleasure. I think most people would consider me a psychological wreck sexually but I am happy and so is my wife.