Thank you for mentioning that.
Vaping is free from many of the harmful effects of ciggy smoke. Yet there are health lobbies trying, and to some extent succeeding, in having it demonised or banned. This seems to stem almost completely from the basis of you can't prove it's 100% safe and it's enjoyable,so it must be bad. But these aren't the views of the lads in the pub, even though the level of logic is around the same (i.e.the "It stands to reason dunnit" level). It's professional health advocates.