But, my experience with the broader classification of brain drugs and medical professionals that prescribe them is that "unless it's broke don't ask to fix it, and even then put whatever we tell you into your body and let's see ehat happens."
There are some excellent studies showing modafinil to benefit all doctors when performing while sleep deprived. Modifinil is pretty much as safe and addictive as caffeine. Now, try going into a doctor's office with this info and asking for a script. My experience is that 9 out of 10 times you'll be seen to be displaying addictive behavior.
There are a bunch of drugs that, if properly taken, will do wonders for your mental life. Intunive, selegiline, methylphenidate, to name only a few. But, while it's legal to smoke, drink, watch tv, or eat yourself to death or into depression, acting on your own to take these drugs could land you in jail.
If the US is so gung-ho on personal responsibility, let us take responsibility for our actions then, and let doctors be partners, not parents. In an age where inhanced mental or physical condition make an enormous difference in ones quality of life, stop hamstringing us from taking action so we might better ourselves.