USA is way too protective of children, it borders on lunacy. In my grandparent's generation you were basically on your own as a teenager. In my parent's generation you worked from the time you could walk (literally) out in the fields picking cotton or whatever else was being grown. Nowadays you would have the government arresting such parents. People now are just wimps.
In Germany you drink beer pretty much out of the womb. A lot of countries don't have nearly as strict of laws on alcohol, tobacco and drugs and they appear to be doing just fine.
I have no issue with making a law that you need to be 18 to use nicotine products, but the CDC acts as if this is some national emergency. There's A LOT worse things kids can do to their bodies than vaping. The average American diet will kill you faster than even smoking analogs will. Sugar is probably the #1 killer in this country and we never hear anything about it (even though the evidence is pretty overwhelming that it's the major cause of obesity and heart disease).
I really wish the CDC and FDA would spend more time educating us on risks than they would on political lobbying to get things banned. Every time they mention studies on vaping, they never give details and when they do, they are highly misleading statements. They always make statements like "there's been bad things found in e-liquid." The question is how do these bad chemicals compare to tobacco cigarettes? They always dance around this question.
They should act as an impartial scientific body, but they really aren't. The CDC and FDA are full of a bunch of ideologues that twist the science to fit their own agenda. I mean I have seen very little research on e-cigs from the FDA. All they do is comment on other research and mislead the public on what the studies really mean.