Dose makes the difference. The kind of dependency people with ADHD develop on their meds is closer to the kind a person with mobility issues develops on their wheelchair after spending some time using it.
Again, have you any decent experience with drugs?
The comparison to meth “addicts” is absurd. People with ADHD are not taking Grams of prescribed amphetamine pills to get high like some one blasting their brain with a bag of street meth with the intent of feeling euphoria.
This is actually not true of the non-stimulant ADHD drugs like Intuniv; you have to taper that one off over a few weeks or unpleasant things happen to your heart rate.
And, of course, ADHD patients constantly forget to take their drugs, and the system where you have to get a new prescription every month isn't even something they can reliably do, being ADHD patients.
People who use amphetamines 'recreationally' seem to mix it with alcohol, with very bad long-term effects on health. It also seems to drive people towards reckless and poorly-considered behavior, which is similar to the effect cocaine has on many people.
It's a wise life decision to not associate with cocaine and amphetamine addicts, certainly. However it is also curious that people in treatment for ADHD also develop a dependency on the drug, although perhaps in a more controlled manner due to it being prescribed, yet few people in the medical-pharmacological world seem to be that concerned about it.