The legendary Mike Tyson stated that, boxing at 50 years old, he earned more than when he boxed at 20.
“My 14-year-old son asked me why I do this. For a moment, I didn’t know what to answer. And I became sad. I said: “Because I am the best who ever did it.” He didn’t understand. But I added that this is all I know how to do. I earned more money at 50 than at 20. And at 50, I think I fought only four times,” — quotes Mike Tyson Talksport.