As an Adderall user, I can back this up. The symptoms of use are very similar to meth. Ever seen that "meth jingle" ad? The whole "pulling hairs out of your face, cleaning everything, etc" pitch is spot on to Adderall side effects. The difference is that Adderall side effects are dramatically more mild due to (as betterth said) a properly calibrated and reliable dose.
Also, with Adderall, you can't afford to just take more to offset withdrawal symptoms, because you only have so much. The temptation to take another as it wears off is pretty substantial, especially for long-time users.
Uh, having taken adderall nearly every day for 20 years, I can say that I have absolutely no temptation to take another when the first wears off. In fact, I tend to forget without an alarm and then wonder why I can't focus.
Nor have I ever had any compulsion to clean everything in sight or pluck every hair from my face. It certainly makes cleaning easier, but I certainly don't feel the need to do it anymore on or off of it.
So you forget to take it for a couple of days? The biological half-life of dextroamphetamine is 10 hours and levoamphetamine 13 hours. That's 10 to 13 hours (since Adderall is a mix of both isomers) until just half of the dose you took is eliminated from your bloodstream. If you take something with a long half-life like that every day, it's constantly in your system. It takes roughly three days to completely eliminate a dose.
Yes indeed I often forget to take it during the weekends. I have no compulsion to take it when my prescription runs out (I often delay going to the doctor to get a refill and go a week without, especially if focus is not absolutely necessary).
Fair enough, that doesn't sound like an addiction at all. If you're just taking it to improve concentration, you might have luck with a combination of a Vitamin B complex, Piracetam and L-Tyrosine. All are cheap and have no side effects.
Also, with Adderall, you can't afford to just take more to offset withdrawal symptoms, because you only have so much. The temptation to take another as it wears off is pretty substantial, especially for long-time users.