Physical dependence really doesn't have any impact on addiction. 'Rapid-detox' actualy does work. With chemical cocktails you can overcome physical opiate dependency in 3-5 days, which is nice if you have the money for it to save yourself a few days of pain (plus it can probably convince some to begin treatment slightly earlier), but it has no impact on long or even medium term sobriety. Remember that everything is the brain. Talking about behaviors is still talking about chemical changes in the brain and addiction is an incredibly complex problem that we still know very little about.
As anyone who has worked in addiction medicine or has been an addict, kicking 'physical' dependence is the 'easy' part.
