The more interesting take for me is that these meds work roughly the same way and almost as well in people without ADHD (a symptom cluster, not a single disease per se, like everything else in the DSM). As we give them to people with ADHD why not let anyone get a scrip?
Well, I yet to see someone without ADHD who becomes calmer and slows down after taking stimulants.
People without ADHD already get more than enough benefit from just coffee. Stimulants might be able to benefit them further, but if you let anyone take them, eventually it'd become expected of everyone due to their increased productivity, and the potential consequences of abuse are much higher than coffee.