In America more than 42 million people ages 18 and older smoke cigarettes according to the Centers for Disease Control and Prevention.

That number is going down though, thanks in part to higher tobacco taxes, increased education and electronic cigarettes. Electronic cigarettes have been on the market for less than a decade, but some financial analysts already predict the e-cig industry will surpass regular cigarette use over the next few decades. There are more than 200 brands on the market and more "Vaping stores" are opening every day.

It was one of the coolest things to do in the mid-20th century but due to extensive research and health problems many smokers began to realize that smoking probably wasn't that cool after all. Since then, many alternatives have been created to help people get rid of their addiction but the question remains, why are E-cigarettes so popular? (click for more)