In any other context these people are probably fine with marijuana legalization and libertarian-esque drug policy in general ("What you do with your body is none of my business..."). When it comes to Adderall, suddenly everybody becomes moralizing and sanctimonious.
We live in an odd moment where you can get legal, high-quality amphetamines online by speaking on video chat with a nurse practitioner who will ask a bunch of leading questions and conclude the five minute interview by prescribing you a highly effective stimulant. Just like with marijuana in some states, you have to observe the proprieties and treat it as a medical intervention. And just like with marijuana, there are some people for whom this really is a life-changing medication.
The only area where I'd moralize about Adderall is that we give it to so many kids. There are grade school kids taking a daily dose that would keep me up for three days, and doing so for years. That's beyond messed up. But adults, if they want to, should have at it while they can.
The regulatory situation in the US is truly a mess. In other countries I have had the exact opposite experience, such that it took years of tests to justify a prescription that was laborious to maintain. What's the point of a drug schedule if it can be abused so openly?
I agree, and this was largely my point: if you think it's ok for adults to take drugs just for fun, then you should be ok with them taking drugs for any purpose whatsoever.
I don't think anybody is proposing prescribing marijuana to children and forcing them into a lifelong dependency on it. If Adderall is just available, sure, whatever - but a lot of current users of it were initially forced into it without a clear understanding of the consequences.