Honestly, I think it's not the nicotine that is the real hook when it comes to cigarettes. I mean, we THINK it is because they TELL us it is and lowering or raising one's nic level when first trying to stop the cigarettes DOES ease the cravings. However, once we're not hanging on by the fingernails and fighting to keep away from lighting up the "analogs", it's downright EASY to reduce the nic level and it just gets easier and easier the more time passes.
Heck, the only reason I vape these days is for the hand to mouth motion. There are many times I don't even think about vaping for up to a week at a time.
We convince ourselves we NEED something and we have to play mindgames with ourselves in order to trick our brains into realizing that we're not going to melt down if we don't have it. That was the best thing vaping did for me. Made me realize that cigarettes weren't my master and that I could take or leave them without stressing one iota.
Sure, I occasionally get a craving - we all do and we all will here and there if we were heavy smokers - but I recognize it for what it is and can distract myself away from it, or even just take a couple of puffs on someone's cigarette to remind myself that they're actually REALLY GROSS and that I'd never have started smoking in the first place had it not been everywhere....on television, in movies, everyone's parents smoked, etc.