I, too, am a former smoker and I have questions. Mostly how a device that delivers the addictive substance helps you quit.

Were you taking a "step-down" strategy like with the nicotine gum? Since the gum is carefully regulated and the "juice" isn't, how can you be sure your step-down is actually doing anything? And since the gum is metered out in measured doses, what's to prevent you from just grabbing full-strength juice and falling off the wagon? (Compare with smoking, which means you ostensibly have to go and buy a pack of smokes and a lighter, assuming you followed step 1 in the gum and got rid of your cigarettes and lighter)