I'm gonna slide down that slippery slope :).
The way I see it, jobs that can be done better while doped will have pressure on their executors to continue to supplement or lose the position.
That's not to say it's hopeless, just that highly competitive jobs might be out of reach for those of us who decide that they don't want to be drugged.
I look at it like professional sports. So many athletes use performance enhancing drugs, that to compete with the pros, you need to take them as well.