[mercer]

Could you elaborate? I've been surrounded by regular drug users for at least a decade at this point, and I've see dependency/addiction to all sorts of drugs, including those that are often considered non-addictive. And that's not even counting addiction to gaming, food, sex, and so on.

I have not encountered a single case where someone appeared to be dependent on or addicted to acid. Sure, some people used it a little more than I'd consider healthy, but calling that an addiction or even a dependency would be stretching it.