Tolerance levels off pretty quick, and goes back down with short breaks.

I’m pretty sure addiction is very rare, and not comparable with other prescription narcotics.

I’m not sure what you consider abuse. I guess college kids use it to help them get homework done, which sounds like a congruent context to me; only without the doctor approval. Taking too much has direct and uncomfortable side effects, at least for me. Whenever a I took adderall, I was extra careful to never accidentally taking an extra dose after doing so once on accident.