My hypothesis about this for a long time has been stimulants help everyone be more productive (with some tradeoffs) and ADHD is kind of a weakly differentiated diagnosis that could apply to most people. Probably something like this was lost when people stopped smoking, obviously beneficial for health - but a huge amount of the public was taking stimulants regularly via nicotine until relatively recently.
>My hypothesis about this for a long time has been stimulants help everyone be more productive (with some tradeoffs) Of course they do. They're stimulants, that's what they do. Some people just need them to be closer to normal, or whatever's considered normal in post-Industrial society. Modafinil promotes wakefulness in everyone, not just narcolpetics. Anxiolytics calm down everyone, not just the anxious, and psilocy…
One example of this actually happening is the concept of a "stimulant nap" in people with ADHD, where stimulants actually make them sleepier. Also manifesting as "I tried coke once, it didn't do anything, I just felt sleepy"
Terrible source but it's a pretty common thing: https://www.reddit.com/r/ADHD/comments/hkkyjl/you_know_your_...