Agreed with all of the above... I've noticed that as media has increased reporting the size of the market and it's expected growth, the state and local agencies are systematically increasing their ability to 'get a piece of the pie' via taxation and licensing fees. Right now, it still seems to be a very grass-roots, individualized, distributed market, but the PTBs certainly don't want to leave it that way.
As a fairly new vaper - 4.5 proud, happy months - I can say that it doesn't seem to be truly mainstream yet, so for a lot of politicians it must seem like a safe target. It's getting there, I know, but when my neurologist recommended it to me, my only prior exposure had been a HuffPost news article. It seems like so long ago to me now, but that was really just a few months ago and I live in a fairly politically-active metropolis. So for the average voter, the 'for the kids' argument and 'let's tax it' argument likely carry a lot of weight. Then the FDA thing puts us in a catch-22 - our best argument for the public is that it's more effective than anything else so far as a stop smoking aid, but we can't use that as a public argument because of the FDA implications... Neatly boxed, huh?!
But hey - one thing the tea party taught us is that a minority can be seen and treated as a majority if they're loud enough, so if we stay loud enough, perhaps we can stay out of that box that they're trying to pin us into. Worth a shot, anyway, as I know all who take the time on this sub agree!