> If we define addiction as [not] being able to stop despite wanting to,
That's not a poor definition for addiction. That's a definition of a habit. Addiction tends to include "drug seeking behaviour"; and tolerance; and perhaps withdrawal too.
In practice, an addiction is merely a habit that is not wanted, whether by the self or others. We acknowledge that gambling can be an addiction, yet an addiction to a game or to internet browsing is taken much less seriously.
That's not a poor definition for addiction. That's a definition of a habit. Addiction tends to include "drug seeking behaviour"; and tolerance; and perhaps withdrawal too.