Here’s s philosophical tangle that gets to the heart of the debate about steroids:
[W]e see it as perfectly justified when someone with a good natural singing voice takes pride in his performance, although we’re aware that his singing has more to do with talent than with effort and training. If, however, I were to improve my singing by the use of a drug, I would be denied the same recognition (unless I had put a lot of effort into inventing the drug in question before testing it on myself). The point is that both hard work and natural talent are considered ‘part of me’, while using a drug is ‘artificial’ enhancement because it is a form of external manipulation. Which brings us back to the same problem: once we know that my ‘natural talent’ depends on the levels of certain chemicals in my brain, does it matter, morally, whether I acquired it from outside or have possessed it from birth? To further complicate matters, it’s possible that my willingness to accept discipline and work hard itself depends on certain chemicals. What if, in order to win a quiz, I don’t take a drug which enhances my memory but one which ‘merely’ strengthens my resolve? Is this still ‘cheating’?”
If we’re all chemicals, why prefer the ones we have by chance rather than those we have by design? Slavoj Zizek elaborates.