As an avid e-cig user, I would advise against it. If you are not already addicted to nicotine, then there is no need to start. Although there are some studies that suppose nicotine might help people stave off alzheimers and help with other mental disorders unless you think you stand a good chance of suffering from one of these in the foreseeable future and you think nicotine might be beneficial, there is no need to start a habit that will quickly control you.

If you really want to try e-cigs, there is nicotine free liquid available and one company (the original inventor) announced today that they will be bringing out an e-cig device that will have the active ingredient lobelia, also known as "Indian Tobacco" instead of nicotine. This is because they will be able to market it as a dietary supplement, something which the FDA will not be able to ban (they're guessing anyway).

The FDA are currently in court with 2 e-cig distributors because they decided suddenly to the joy of various associates of the pharmaceutical industry to classify all e-cigs as drug delivery devices (even though no medical claims were made by the two in question - the largest distributors of e-cigs in America) and confiscated their shipments. In a strange turn of events the two e-cig companies are arguing their products should be classified as tobacco products.