i was a tobacco user for roughly ten years, equivalent of 2-5 cigarrettes a day max.
The month i picked up a juul that amount effectively 10x'ed. I feel bad for all these kids who are going to leave high school with a stronger nicotine tolerance and dependence than some 40 year chain smokers.
This is why I never tried it. I bet I would like it, a lot. And with cigarettes you have to go outside, you smell bad, etc., these things have none of those problems. It just looks very easy to get hooked on them.