I can't foretell the future. But, for the present I have two words of advice:
stock up.
The juice is supposed to have a two year shelf life, I suspect it may actually be longer.
Properly stored hardware will last indefinitely I reckon, until you start using a given piece.
Although, unless further developments are hindered, what you buy today may seem antiquated in a few years, it will still be usable.
And, then, as has been noted ... supplies will be available, even if not condoned by the powers that be.
In answer to the OP's question: If vaping was somehow snatched from me, I suppose I'd have to quit cold turkey. It would piss me off, for sure, but I just can't see returning to cigarettes. No way.
Let us all just hope this is a groundless fear.
