General Discussion

Any evaluation from just about any program will tell you that in short order. Tolerance can often be a factor, but it isn't a mandatory pre-requisite or a universal symptom. Binge drinkers and shooters often have low tolerances, and abstain frequently.

Anything can become a dependency or addiction if it makes you feel or not feel a way you are after. It's what it does to your life, and your inability to stay stopped in spite of that which is addition.

You can talk about relativistic "severity" of addition by how many bottoms someone will endure to revisit it - loss of stature, job, family, jails, institutions, death - but steal little, steal big, it's stealing all the same.

The high you feel is just your body's reaction to a stimulus. Same with the withdrawal. It isn't the addition. It's agnostic chemistry. The drugs are just tools, some are just more dangerous than others.

"Wine is fine but whiskey's quicker, suicide is slow with liquor"

Judging something as addictive or not, based relativistically on the difficulty level of withdrawal symptoms, or likelihood of death from overdose, is a bit of a shallow view, IMHO.