I worked briefly in the pharmaceutical industry and it taught me a few things about the level of testing and knowledge labs have about the pills that you compare to coffee. There has been much more research about coffee (which I remind you I don't drink either because I know of its side-effects) than there has been about the neural enhancers you kids take. You want to believe it's OK. Go ahead but don't blame me for saying it makes no sense to me. And you are right, I am not willing to put much more time into going in details on this. Too busy and the topic is really so off the charts to me that I am pretty sure of myself here.
I have heard so much of the same non-sense pseudo-chemistry from all the people advocating for one drug or another for their wellbeing. The argumentative here really sound of addiction. So I challenge you to explain in bio-chemical terms why these drugs are as harmless as coffee. Good luck!