For example, its got a high chance of ending up poorly if you have any sleep issues, if you have depression, if you have an addictive personality, if you're an alcoholic, or if you smoke weed (generally the paranoia one experiences from weed can make amphetamines even more dangerous).
I think that's why folks are downvoting you. You might have a small point here, but its rather nitpicky. If you don't have ADD and you're using Adderall all the time, I'd bet money its going to hurt someone, which is all the OP said.