I smoked for just 5 years, for the first couple months it was no more than 5 a day, but it weaned it's way up to 15 a day and stayed pretty consistent, I tried quitting numerous times but it never worked for over 4 or 5 days, except one period where I got very into road biking and racing where I quit successfully for 6 months, by the end of that I was still fully addicted and eventually gave in from stress, I suppose. This was around 3 years ago. Since then I was back up to my usual smoking rates, cutting down and/or speeding up depending on how pro-life I felt. Until not long ago, when my dear young Mother gave me an Ego style vape to use, I had no intention of quitting cigarettes whatsoever, which I think is a very key point, but the first day I didn't want to take and break my PV at work (agricultural labour) so I smoked cigarettes, but because I fell in love with vaping so much after that initial day I started using my PV at work, and that day onwards (stated in signature) I haven't touched analogs... Not long I know, but this time I have not even had the slightest hint of a cigarette craving, and am more than confident I will never go back to the buggers. So in conclusion; YES! Vaping was entirely successful, and somewhat spontaneous!