The interesting thing is it's not really "addictive" as commonly believed. Unless you also label air as addictive. For one thing, we have nicotine receptors built into us. Its found plentiful in nightshades.

The addiction phenomenon is a multi faceted thing, not from the substance alone. If you're doing everything else right and living according to nature's precepts and cycles, you are not prone to destructive addictive pathways. Or to put it another way, if your lifestyle is so out of step with nature that you have lost the ability to produce appropriate amounts of dopamine, you will crave and seek out X, Y, and Z as essential substances / behaviors to normalize.