Because addictive drugs are physically harmful, their use by athletes is never justified. Purists, however, claim that taking massive doses of even such nonaddictive drugs as aspirin and vitamins before competing
should also be prohibited because they are unnatural. This is ridiculous; almost everything in sports is
unnatural, from high-tech running shoes to padded boxing gloves to highly-specialized bodybuilding machines. Yet, none of these is prohibited on the basis of its being unnatural. Furthermore, we should be attending to far more serious problems that plague modern sports and result in unnecessary deaths and injuries. Therefore, the use of nonaddictive drugs by athletes should not be prohibited.
Which one of the following can be inferred from the passage above?