Electronic cigarette devices were first patented in 1963 in the midst of the healthier anti-smoking campaigns. Initially, these alternative smoking devices were far too cumbersome and difficult to use. Many people complained that they were not only expensive, but also of poor quality.
The device never really passed the testing phase because the market was not large enough. However, technology has improved greatly since then and the latest versions (produced in 2003 by a Chinese scientist) are far more pleasurable for human consumption.
In order to understand how e-cigarettes are a good alternative smoking method, you must first learn what they are and how they work. A smokeless cigarette uses intense heat to vaporize the liquid solution into a mist, which is inhaled by the user without the nasty side effects and risks that come with a regular cigarette. The device is powered by a battery or a USB adapter that allows the vaporizer to work properly.
Not only are electronic cigarettes far healthier than normal ones, but they are also much more convenient. Due to the health risks with cigarettes many countries have included high taxes on them in order to discourage consumption. This makes a pack of cigarettes very expensive compared to what they used to cost.
Ref: http://bettersmoking.org, wikipedia.org, webmd.com