Daniel Z. Lieberman

“Nicotine, in fact, is an unusual drug because it does very little except trigger compulsive use. According to researcher Roland R. Griffiths, PhD, professor of psychiatry and behavioral sciences at the Johns Hopkins University School of Medicine, “When you give people nicotine for the first time, most people don’t like it. It’s different from many other addictive drugs, for which most people say they enjoy the first experience and would try it again.” Nicotine doesn’t make you high like marijuana or intoxicated like alcohol or wired up like speed. Some people say it makes them feel more relaxed or more alert, but really, the main thing it does is relieve cravings for itself. It’s the perfect circle. The only point of smoking cigarettes is to get addicted so one can experience the pleasure of relieving the unpleasant feeling of craving, like a man who carries around a rock all day because it feels so good when he puts it down.”
― Daniel Z. Lieberman, The Molecule of More: How a Single Chemical in Your Brain Drives Love, Sex, and Creativity―and Will Determine the Fate of the Human Race