First, none of the players you mentioned have ever said they are tired of tennis. They make millions of dollars a year, what the hell is there to be tired of? People have much worse jobs where they have to hear twice as much complaining and criticism for not even a fraction of what these ladies make. I think these players know exactly how lucky they are, and in the case of Venus and Serena, they know it won't last forever so they are getting their backup careers together.
"I want you to believe in yourself in every positive thing you do, and success will be your portion,"
Serena Williams inspires the children of Ghana