The trouble is, vaping is such a gift that you can easily forget how much you hated each and every analog you smoked. Life seems to get back to normal and the joy of the first few analog-free days becomes a distant memory.
Too true. Smoking was such a huge part of my life, and that "hey look at me I'm a non-smoker" feeling goes away pretty quickly. But vaping is really a gift. I couldn't have quit without it. When I cheated, it was mostly due to overconfidence, because I really know that I hate smoking (and would not go back to smoking full time) and have something else that I enjoy more. Which is a dangerous little trap, because one can lead to many which can lead to that cycle where you are always thinking you will quit soon, but you never actually do.