So you vapers out the in CC land, especially the ones using "mods" can you tell what is the obsession with generating plumes and plumes of exhaled vapour? It must be a factor of 20-30 compared to a draw on a fag?
Especially among younger and more "hip" users, there is a whole scene around vaping, it's not necessarily a method of giving up, I know some youngsters who never smoked but have now taken up vaping because in their eyes it's fashionable.
There are "flavour chasers" and "cloud chasers" (apparently). It's the cloud chasers who set up their kit to produce large amounts of vapour. You do get a really good lung hit off it, but as others have said it's not discreet and to some the 2nd hand vapour is as unpleasant as smoke. The flavour chasers (again, apparently) are not so fussed about volume of vapour, but about developing the most pleasant flavour and overall vaping experience.
My priorities are getting nicotene into my system with the least cost and fuss possible. I rarely vape in public, don't do it in front of my wife or kids, I don't vape in pubs either as it's not allowed in some. If it gave me a good enough hit, I wouldn't even care if there was no vapour at all.