Smokeless

I haven't been to the mall in forever, but had to get my watch repaired. What is with these people and the electronic cigarette ? Is that thing for real, or just something to puff on so smokers can quit? If they are still getting nicotine, what's the point? And, if they are not getting the nicotine - what is the point? I saw someone at a kiosk with them and thought he was actualy smoking in the mall! Do they think that is cool? Smoking is a pretty gross habit, why would anyone want to "faux" smoke?