I just solved all the world's problems in one post

[blumpkin blownuts]

give you fair warning when they think you're approaching "addiction".

"Sir, I think you've had enough"
My wife left me and some junky nurse stepped on my last dose. Gimme another.
"Sir, I think you need to go sleep it off"
(Pulls gun) I think you need to give me my hit or I can just take it from someone else.

"Addiction" happens when people use drugs to fill in the broken parts of their real life.

Habitual usage happens when people use drugs to fill the broken parts in their life, specifically in their spirituality. There is no magic number when habit become addiction. Just like there's no magic age for havign healthy consenual sex - it lies above an unknown boundary and for everybody those boundaries are different.