I actually think ecigs are worse than normal cigarettes for this reason. It's now socially acceptable to smoke them, easier to smoke them (you can just hop into a bathroom stall and take a hit).
When I was a smoker, running out of tobacco would induce panic attacks. Every minute spent on an airplane or at the movies I'd devote most of my thoughts to longing for the moment I could have a smoke again. When short on cash, I'd prioritize tobacco over food.
As a vaper, I have on multiple occassions forgot to bring my vaporizer (or charger, or e-juice) when travelling and gone without for days with no problems at all. A bit annoying perhaps, but no more than forgetting to bring my headphones before a flight or something like that, certainly not even close to the cravings I'd get when I couldn't get hold of my precious tobacco during my smoking days.
There's obviously individual differences at play here, but if someone came to me complaining about their horrible vaping addiction I'd have to restrain myself from not going all Bob Saget in Half Baked on that poor vape junkie... ( https://www.youtube.com/watch?v=LEberTUvrsE )
