^ yup mine too just based on what ive seen in friends...
I know of lots of ppl who tale ritalin, dexedrine, adderell or meth interchangably... different dosages, same result... all give that dopamine reward...
Ppl think im anti amp but im really not... its great when your falling asleep and need to be awake and alert... once or twice a month or even week is probly harmless for the most part... but habitual use where you need more and build a tolerance is crap and simply abuse imo.... there are a few exceptions... adhd or narcolepsy or whatnot... but even that i feel needs to be a MAJOR problem to consider daily stimulant use to be a reasonable course of treatment....