I think what NotADoctor is talking about is simply allowing athletes to use under the supervison of a doctor. Just like they train under the supervison of a coach. The use of drugs could just be the next step in a athlete's progression.
If you chose to not take the drugs, then maybe you have made the choice to get a real job. Just like if you decided you didn't want to run 100 mile weeks.
Again, I compare this to the day when athletes couldn't accept money. They were declared cheaters, there were big investigations, banns, etc.. Now it's totally accepted, heck, we wish they'd get paid MORE, and just 30 years ago it would keep you out of the Olympics.