I smoked a variety of cigarettes for a little less than 10 years (2001-2011). I used an e-cigarette in 2011-2012 and quit successfully for almost a year. The device I used was a mechanical e-cig that used a 14500 battery and I used simple atomizers and cartomizers. I went back to smoking occasional tobacco cigarettes for a few months. I believe this was due to frustration with the devices of the time and a lack of understanding of how to use them properly. I picked up a variable voltage device that uses 18350 and a collection of tank atomizers which are simpler to use and last significantly longer between refills. Since that purchase, I have been smoke-free and have no intention of smoking again. There is not even the temptation to smoke. I feel better for doing so. My lungs are back to normal capacity and the other health benefits have been obvious as well.