This is simply not reflected very well in how professional sports are structured. If this were really a priority teams wouldn't be privately owned. It has extremely negative effects on each sport, easily dwarfing the influence of performance enhancing drugs.
Anyway, I would absolutely love to see what the human body is capable of. To me, hearing a ban of performance enhancing drugs is a guarantee of a more boring and less competitive game. I understand the impetus of protecting children, but we're already buying and selling humans. How good of an influence was this to begin with?