Because at some point everyone loses. Chuck Liddell said it best. There is no such thing as an undefeated fighter. In the world of kickboxing everyone has lost. That is a fact. In the world of boxing everyone has lost. Tyson, Ali, Frazier, Manny, have all lost. Even the great Floyd Mayweather has lost, if you count the time he boxed in the olympics and lost two fights by decision I think. Mma same thing. Lesnar, Machida, Gsp, Fedor, Anderson Silva, Cain, Jds, Faber, etc., all the greats have lost. Bones will to. He is no different. It's only a matter of time. A question of when and where, is it not?