Addiction to things that have barriers to access. I have addicts in my family unfortunately and spent most of my youth neurotically avoiding substances because I thought addiction is inevitable.
My understanding of myself now is that I am not willing to go to the store when I have a craving for anything, including booze which I have finally allowed myself to enjoy (and I really, really enjoy it). If I'm at the store doing a grocery shop, the cheapskate in me is unlikely to purchase guilty pleasure food. I don't like going to the store so I tend to be parsimonious with food, alcohol, and weed.
But then I recall a relative who was so deep in that he stopped at a liquor store after sideswiping a parked car while the cops were out looking for him. I know alllll about rehabs, antabuse, and am now interested in this other therapy that's getting some press, but despite my interest and vicarious experience secretly I just want to say, "Have you just tried not buying it?" I know that's not how it works for people, and I know there is some inescapable brain chemistry going on, but that doesn't mean that I "get it".