It is impossible to understand addiction without asking what relief the addict finds, or hopes to find, in the drug or the addictive behavior.
The first question to ask is not what is wrong with an addiction, but what is right about it. What benefit is the person deriving from their habit. What does it do for them, what are they getting that they otherwise can’t access. This inquiry is key to understanding any addiction.
We are all addicted to something, not necessarily a substance. A way of thinking, being, reacting, and it comes from somewhere.