One of the hardest lessons I've had to learn as a parent is that no matter what hard-won wisdom one has acquired, it can't be passed along in any certain fashion -- you can't immunize kids against making bad choices; they have to learn for themselves what things are unwise, and usually by the time they learn, it's too late -- which is why I think they should be allowed to vape; the potential of "becoming a slave to nicotine" is so much lower, if they haven't smoked before vaping. So that when they're 18 or 20 and decide it's stupid, it's much easier to get rid of, than a smoking habit.
Andria