I started smoking at the age of 15. After 18 years of smoking I kicked my habit, using smoking cessation classes and nicoderm patches. Then 9 1/2 years later I picked up a cigarette. Fell off the wagon, so to speak. I smoked for another 7 months. The reason I had quit in the first place, was becuase I am an Asthmatic. I was using my emergency inhaler regularly and had frequent trips to the ER for nebulizer treatments. After I quit, my breathing improved dramtically and stayed that way. But as soon as I started smoking again, the problems with my breathing resurfaced. So, I bought a disposable ecig to try it out. After using an ecig for a few weeks, I picked a day to quit smoking cigarettes and have been using my ecig every since. That was 1 year ago and I now using zero nicotine smoke juice in my ecig and do it only for the flavors. My breathing is just as it was as a non-smoker and I plan to continue vaping for as long as I enjoy it.