The psychological aspects are habit forming; the social aspects, the ritual etc. Whilst nicotine is undoubtedly addictive, there are other things in tobacco /

The psychological aspects are habit forming; the social aspects, the ritual etc. Whilst nicotine is undoubtedly addictive, there are other things in tobacco / cigarettes that seem far more addictive. There's also the additional crap added, like chemicals to ensure the cigarette doesn't go out like hand rolled and cigars do, etc. The part I missed most whilst quitting, with the aid of vaping (nicotine replacement gums, patches and inhalers were a waste of time and money for me) was something present in tobacco, but not in ecigs. Vaping never quite replaced that, or felt as nice. The occasional cig I had when out drinking with friends made it quite tempting to relapse - though I didn't. The nicotine withdrawal when I quit vaping was so minor compared to the withdrawal from stopping tobacco that I actually wonder if the various quitting aids are replacing the wrong chemical(s). I am, of course, just an anecdotal data point of one.