I am serious. At least in the sense that I am interested in hearing others opinions on it.
One could argue that pro sports isn´t necessarily for everyone. I know WHY Messi had the treatment, but it is also beyond question that BECAUSE he was treated with what in sports is a banned substance he is now the best player on the planet. Or rather - had he NOT been treated then he wouldn´t be the player he is today.
Perhaps, that should disqualify him from becoming a professional athlete? There is the same argument with Lance Armstrong, and I believe the issue has indeed been raised in his case. (Then a lot of people think he used other illegal drugs as well, but that is another discussion).