I think that's not the best definition of an addiction. Plenty of people that smoke aren't actively trying to quit or even want to quit, but they are very clear

I think that's not the best definition of an addiction. Plenty of people that smoke aren't actively trying to quit or even want to quit, but they are very clearly addicted to nicotine. It's the reason people have interventions: for a person addicted to something, it can be hard to actually admit that they're addicted to something. That should qualify, even if that person won't admit that their behavior has become a problem.