I had smoked for over 40 years and had tried to quit with patches,gum. None of which were successful. Four years ago I purchased my first e-cig. For several weeks,I was a dual user of combustible cigarettes and e-cigs. To my surprise,I found I was using e-cigs exclusively and no longer wanted a combustible cigarette. I am still using e-cigs and have lowered my nicotine level. I no longer have a smokers cough and I find I am able to go a longer period of time without feeling a craving. I have been smoke free for 4 years and I am so glad I found e-cigs. As long as e-cigs are easily available and available in the product I use,I will never return to combustible cigarettes. I wish more smokers would find this product so they will be able to find the freedom from combustible cigarettes that I have found. A pleasant side benefit is that I no longer smell like an ashtray!