I found this relevant

[Vocalek]

But the dogs appear to be taking it up. (Or is he just "holding it for a friend"?)

 

[telsie]

What I'm saying is if new users only come from the segment of smokers looking to quit cigarettes, then new ecig users will become a diminishing number.
Yes now from a huge base of smokers theirs lots of converts but as time goes on smoking will become less normative. New ecig users just to keep the growth in the market will have to come from non smokers.
This may be a couple of decades down the line but its the nature of the product. It works as a cessation method, users move from cigarettes to ecigs. What doesn't happen is people taking up the ecig as a first nicotine delivery system.
Ultimately big tobacco is right to be scarred, ecigs are in long term competition, at the moment ecigs let big tobacco recruit new users for them.
Health concerns aren't part of the argument, this is about money and who will end up holding it.

I think the PV market will eventually expand into appetite suppression. How may times have people on this forum commented about vaping tasty dessert flavors instead eating tasty desserts? I've seen it plenty, so it must work well for some. Adding in the nicotine could make it an effective tool for weight loss, but even without nic, a hand-to-mouth ritual of food-flavored vapor might help some overweight people shed a few pounds.

Tommy, at the current rate of descent in the number of smokers, you're looking at centuries, not decades, to eradication. You are also looking at a very short period in time where TC is still "winning the battle". Get the right rebellious generation or two and all those gains, figuratively and literally, go up in smoke. The TC movement is having about the same success as the other moralistic movements we've seen in the past.

I personally don't see PVs as being a young person's choice over smoking. Safety is not their concern, rebellion is. Later and by all evidence much later they may look at PVs as an alternative but I can't see young people as early adopters.

The irony is that if antis have their way and get PVs banned everywhere (y'know, for the kids' sake), then those rebellious kids will indeed start to find PVs attractive.