Even if your vaping 0mg its bad..the lungs don't want water vapor, they want oxygen. This is the reason vaping is looked down upon and may be potentially banned, people get a false sense of safety with ecigs, and they shouldn't! We don't know the effects!
If you only smoke socially and once in awhile, my advice is to keep it that way.
Also if you start vaping all the time you will acquire that psychologically addicting oral fixation aspect, and if heaven forbid ecigs are banned, how are you going to fulfill it?
Kimmy I believe you make some very fine points, but I have to take issue with one particular line, and it's this;
"If you only smoke socially and once in awhile, my advice is to keep it that way."
I started out as a social smoker. It began with just one when I was out with my friends. A while later it became one in the mornings while we were waiting for school to start. After that it was one in the mornings and one in the afternoons before the late bus arrived. I walked half a mile home just so I could ride the late bus and get in that one cigarette, when the early bus dropped off at the end of my street. Not long after that it was those two, plus one snuck in at lunch. Two years later I was dashing out to the smoking section between every class in high school. (Yes, I started in middle school.) By the time I graduated I had developed a pack a day habit.
IIMO I would have to say that if you are not addicted to nicotine, if you can go for a week without craving it, then run, don't walk, away from it and don't look back. Whether it be analogs or e-cigarettes, nicotine will run your life. You will plan your whole day around it, your week, month, year, eternity. Most people don't have that kind of control over you, so let why a thing do it? I would prefer to be able to run my own life, thank you very much, but I screwed up early in life and I'm not sure if I will ever get that control back completely. I do at least take major comfort in the fact that I'm no longer doing the equivalent of sucking on a car tail pipe.
Also, to anyone that believes that only smoking a couple of analogs a day is not an addiction and those people can walk away from it, I'm going to have to disagree. Believe in his method or not, Allen Carr's stop smoking method has a success rate somewhere in the 90% range IIRC. He states emphatically that the people that are his toughest cases, those that are the most likely not to quit, or go back, were the ones that only smoke a couple of cigarettes a day. The reason he gives is that, on top of the low level addiction they have, those few cigarettes, because the person is severely limiting themselves, are very precious to the smoker. Kind of like taking off a pair of uncomfortable shoes. You wait all day to take off those shoes, look forward to it, and when you finally get to remove them, the feeling of relief is unbelievable. I can relate to that, because that's the way I got hooked.