The absorption rate of the nicotine is the big "what if" in my opinion. What studies have been conducted, scientifically showing the absorption rates of vaping?
We can't even get a solid scientific study clarifying whether vaping is bad for us or not.
Maybe nicotine isn't the biggest contributor of analog addiction. Like I said I was a light analog smoker, very light, but I vape all day long. My addiction to vaping is physically less, based on my cravings, than analogs ever were. I "had" to have analogs, but with vaping it isn't the same craving.