I seem to be on the opposite side of all of the opinions stated here. I can understand having an age limit, similar to the age restrictions put on being able to buy cigarettes. As everyone of us knows, this will not stop adolescents from getting whatever it may be that they are inclined to buy. You name it, Alcohol, tobacco, and marijuana can be had by all with very little effort, with age and legal status of what is being purchased irrelevant.

Take a deeper look at what is the real reason for these new laws and once again it is $$$$$. Big tobacco companies are the ones that are behind the new regulations. E-vap cigs have cut into their profits. The smoke screen is that e-cigs are causing younger people to pick up a bad habit.
Let's not forget that we were all teenagers once, and with that comes new found independence, and feelings on invincibility. Placing restrictions on any merchandice will not work, and only create a void, joyfully filled by black market entrepreneurs.
Education is the only real option to deter the use of things we don't want our children to be involved with. As parents, we tend to push many of these situations onto the school systems and figure they will handle it. Wrong, as parents it is our responsibility to instruct, guide, and set examples of how we would like our children to behave. Teachers can do their part, but parents must be out in front of issues like this. Even in best case senerioes, kids are still the ones making the final call.