I was a smoker from about the age of ten or twelve and had tried everything to give up over the years - patches, hypnotherapy, gum, cold turkey etc. I managed to give up a few times but always ended back on the smokes. I bought an ecig more out of curiosity than having any thoughts on quitting smoking. I haven't smoked a single cigarette since the day after I first vaped. I have many friends who have also switched from being heavy smokers to vapers.
In terms of it's benefit or not to society, I would look at the horrific statistics on smoking-related illness and death before deciding if you really want to push back against what is beyond doubt the most successful smoking cessation aid ever.
Is it addictive? Sure, though not as addictive as cigarettes in my experience. When I was a smoker I would be climbing the walls going more that an hour or so without a cigarette. As a vaper, I'll vape frequently when I can but on those occasions when I can't (like being on a plane, train etc) it's no big deal.
Even if it is addictive, so what? What are the consequences? Are people turning to crime or prostitution to feed their addiction? Are alleged addicts actually causing themselves harm? Well there is little to no evidence that vaping is harmful, assuming the quality of the liquid is controlled. The most common argument you will get from detractors is that we don't have proof it's safe. That's a fool's argument. We generally ban or control things because we have evidence they are dangerous, not because we can't prove to some ridiculous and undefined measure that they are completely safe.
Look at the reality. The WHO estimates that 8 million people die annually around the world from smoking-related illness? Where are the millions, or even just thousands, of vape-related deaths? There is simply no comparison.
So all those people who object to vaping, for whatever trivial reason such as not liking the smell. Do you really feel that your petty aversion merits restricting what will, in all likelihood, be recognised one day as the single biggest public health success since penicillin?