I don't think number of addicts is a good measure, as you really need to look at both rate of exposure (if something has never been a part of your world, it's hard to get addicted to it), and severity of the results of use that will still keep you doing it despite the drawbacks. Cigarettes are everywhere and were extremely heavily advertised and pushed on people for a long time. Furthermore, you can use them without going broke, and without suffering serious negative repercussions, except chronically over the course of a lifetime. People don't become homeless, ruin all of their relationships, catch diseases, and prostitute themselves out for nicotine. I somehow doubt you'd see many, if any, people doing some of the stuff and compromising themselves in some of the ways that people do for the really addictive drugs like opiates and meth. if they illegalized and heavily demonized/punished tobacco usage, I bet lots more people would suddenly find the willpower to quit. In fact, tobacco use has gone way down since previous decades, and this is simply due to a more aggressive dissemination of the true risks of smoking, and the reduction/elimination of advertising. And yet, the widespread abuse of opiates and meth is worse than ever.