I used to occasionally use chewing tobacco, such as when I would go to a bar to drink. I enjoyed the effects of the nicotine, but never became addicted. I heard about electronic cigarettes through a friend and gave them a try. I enjoyed the effects of nicotine in a very similar manner (occasional use) and soon bought a small kit for myself. My use grew slowly over time, and now (about two years later) I vape daily. I typically go an entire work day without using my ecig due to how physically busy I am throughout my shift (I don’t have any scheduled breaks–I stay very busy). This is not a problem, and I don’t get urges to vape with the exception of directly after a meal, but the urge fades even if I don’t vape. I recently went on a weekend vacation without my ecig, and I felt fine. I don’t feel chemically addicted. I really enjoy vaping in my leisure time, and I use 12mg strength eliquid. I believe electronic cigarettes are orders of magnitude less addictive than traditional tobacco products, even though I’ve witnessed many friends (my wife included) stop their smoking habit and switch to ecigs. Several of these friends, myself, and my wife, are able to go a day or two without vaping and not have any withdrawal symptoms! I am very happy with my device and eliquid (both from Hong Kong, Bauway eliquid). Given that nicotine is a controlled substance, I don’t believe it should be sold to minors. I think that’s about all the regulation that’s needed here is the US. Good companies already make the ingredient information available to customers upon request. I don’t believe anything more than the flavor and strength need be on the eliquid/refill cartridge. I also don’t believe that the quantity of nicotine be extremely accurate since variance is well tolerated among users. You can take a few more or less puffs to suit your desires.