Because we don&#x27;t want a world in which athletes have to destroy their bodies in order to be competitive.<p>ETA: And let&#x27;s be clear, that&#x27;s exactly where it leads.  People will feel compelled to start doping younger and younger, when they can do more and more damage to themselves (like giving themselves testicular cancer) -- young people also have poorer judgment about these things.<p>We&#x27;ve already seen all this happen.