Personally, I think eCigs are just an expensive replacement for tobacco products. I've been off cigarettes for over 15 years, and I smoked from about 11y/o till I was 40. I had a couple of years of "quitting" in there, too, but what finally got me off nicotine was the patch. The patch meters your nicotine intake, reducing it over time. Even so, after I took the last smallest patch off, I felt the craving a little. Luckily, I powered through the last 48 hours to freedom. And that time, I did NOT look back. Best decision I ever made. I look at cartons of those little pieces of shit in the stores these days totally astonished that they are over $75.00USD/carton. What the FUCK? Who can afford that kind of shit? I was smoking a carton in maybe 8 - 10 days, and back then, I don't think they were over about $20.
And the gum, the patch, and I'm sure eCigs are MORE expensive than the tobacco products they replace.
Nicotine addiction is bad for your health, and bad for your finances. Just QUIT !!! It can be done. After over 15 years, I have absolutely no desire to smoke. At the same time, I also know that it would take only ONE to hook me again, so I just steer clear. But my point is, there is absolutely NO cravings now, or even curiosity about maybe having just one for old times sake. I am free. eCigs just hold you a slave to nicotine. Because they mimic the actual smoking of a real cigarette, and deliver nicotine just like a real cigarette, I don't think they bring anything to the table in terms of eliminating an addition to one of the most addictive substances on the planet. Yes, they probably do get rid of other toxins found in processed tobacco, but at a higher monetary cost. If you quit, you get rid of the addition AND the money suck.
IMHO.