One of the things I've found very interesting (and a subject that's been brought up a handful of times on this forum) is the decreasing "jones" for the vape.
When I was still a smoker, there were many times, regardless of the task I was involved in (other than those that occur in the boudoir and a few other locations

), I often found myself thinking about, planning, and looking for that next cigarette, sometimes losing focus on the task at hand.
In my current position at work, I would often start to (almost) chain smoke during high-stress times.
Now it's often a matter of "oh, hey, I haven't had a vape in a while" and I don't chain vape. Although my vaping picks up a bit when I am stressed, it's more like I will do five or six inhales and then set my APV down, rather than maintaining a white-knuckled death grip and doing my best Smaug impersonation.
Now, is this because I'm no longer inhaling the chemical cocktail of the cigarette? I think that's the reason behind it, and I'm pretty happy about it.