Among the misconceptions fostered by AA and the disease theory of addiction is the idea of "hitting bottom" -- that there is some objective state beneath which no human being will go. The same is true in our misconceptions about what will end our war on drugs.
Most people in the United States sample alcohol and other addictive substances at some point during their lifetime. What separates the people who go on to develop addiction from those who don't are a series of variables that were not in their control.
So when is something addictive? It's addictive when we reckon a kind of preoccupation has significant negative effects, either on us as individuals, or on society.