Quick! Tax the hell out of them to feed the nanny staters addiction to cash for their causes.
Users of e-cigarettes are not going to move to use of “real” tobacco products, if the “real” thing is going to cost them a lot more money.
As far as “addiction” to nicotine goes, a lot of hype has gone into the supposed causes and effects, but the RITUAL of tapping out a fresh cigarette, holding it on the lips, lighting it up, drawing in a deep draft, tapping off the ashes in a suitable receptacle, and snubbing out the spent stub, are all of a pattern, which is never established with the use of a “vape” device.
Put it to your lips and drag away. And it doesn’t even have to have any nicotine involved whatsoever.