I smoked off and on for 22 years. The only time I did not smoke was while I was pregnant. I started smoking around 14 quitting at 20 when I became pregnant. After having my first child, I only smoked during social outings. I began smoking again at 28 after my divorce due to stress. At 40 years old, I picked up a electronic cigarette and have not smoked since the day I started. From 28 to 40, I tried using nicotine patches, therapy, nicotine gum & lozenges along with cold turkey and candy. These worked for about 2 weeks, but when time to buy a new batch, I would go right back to smoking cigarettes. I have used 16mg of nicotine for two years, less than 2ml a day out of my electronic cigarette. I use a larger battery and a clearomizer tank to get the satisfaction I need. When I first started out I did try prefilled cartridges, but it just didn’t seem to do the job. March of 2011 was my beginning of a whole new way of life. I do not have any current health issues with regards to lungs, but will say I can make it through an 18 hour day without being totally exhausted. I love not smelling like cigarettes. I do have a panic disorder, so when things get really bad instead of striking a lighter on an analogue cigarette, I just puff a little more on my electronic cigarette to find the relief I need.