This thread should be renamed to "The straw dog in the room". First the FDA now classifies nicotine as GRAS (Generally Regarded As Safe) for long term use, the same goes for all other ejuice ingredients AND caffeine. Nicotine by itself is no more addicting than caffeine, although smoking is more addictive due to all of the other addictive chemicals in them. "COULD" there be long term negative effects? Sure Then again there ARE long term negative effects from caffeine, fast food, sugary treats, high fructose corn syrup, processed meats, and possibly GMO food. So do we pass laws for all of that too?
Passing laws does very little to deter behavior. For instance it is illegal to buy, sell, or possess a long list of drugs yet they are bought, sold, and used in every city, 24 hours a day, 365 days a year. It is not legal for minors to buy cigarettes, alcohol, etc, yet millions do it every year. Passing a law to ban sales to minors will be no more effective than the laws banning sales of cigarettes to them. By the same token, any law banning guns will fail just as miserably. Yeah, I opened that can of worms.
Finally, NO ONE, and I mean NO ONE has ever or will ever start on an eCig vaping tasty flavors and then switch to smoking something that tastes like cleaning the fireplace with your tongue. That is just not going to happen. IF by some crazy chance someone is born with no taste buds it might, but passing a law for that 1 in a billion person is utter stupidity. I have a 14 yr old, and I don't want her to start vaping, nor do i want her to have a Starbucks addiction like her Aunts but I don't want the nanny government to force that issue either way. Why do so many people think the government should be involved in every aspect of our lives trying to force or coerce behavior? Learn to self govern and manage your own household and stay out of mine.