@strypey Full disclosure: I'm a cannabis user myself, have been for 20 years now, and smoke weed on a daily basis. When I go on vacation where it could get me into legal trouble I don't bring any and indeed I don't feel any withdrawal symptom at all. Clearly that's not addiction.
On the other hand I have a couple friends who can't sleep at all and can't focus on anything if they go a day without weed. Is that addiction? I don't know for sure, but it looks like addiction to me.