You have a very solid point there, I've never even considered it this wayWell said @Chef Guest!
If I may add one point, whilst there is a lot of nonsense about the dangers of vaping doing the rounds it is also a side effect of a much deeper problem.
To illustrate, in today's eco-friendly world people generally feel uncomfortable using paper. Trees were cut to make that paper after all, cutting trees are bad and we all 'know' that. The global warming brigade, which is itself now a multi billion dollar industry, have subtly convinced the general populace that using paper is bad. In reality, the paper industry plants two trees for everyone they cut and, transport and manufacturing wastes aside, we should all make at least 5 paper jets a day in order to expand our forests. Perhaps I oversimplify, but the point being that there is now a subconscious irrational fear a lot of folks have about wasting paper.
Insofar smoking is concerned, there has been at least two decades of intense propaganda to convince the general public of the dangers of second hand smoke and I mean second hand smoke specifically. It was not the smokers that were targeted with this campaign but the people around them in order for them to ostracise the smokers. We, as smokers, were perhaps casually oblivious or only peripherally aware of this since, I suspect, we had bigger problems than second hand smoke, as in, first hand smoke.
I suspect however that this has left a subconscious and, in my view, irrational fear in many non-smokers' minds about anything 'smoke like' coming out of another's persons mouth, irrespective of its origin. One cannot alter an irrational, subconscious belief with mere facts and herein lies the problem that vaping faces.
Just my 2 cents ..
"Fear is the mind killer" - Frank Herbert