Electronic cigarettes do not contain the same harmful chemicals that a cigarette does, and therefore by comparison so does the second-hand "smoke". I think your problem with public consumption of electronic cigarettes is the societal taboo that has been placed on smoking in public. Its two completely different worlds. I use electronic cigarettes in public and I make it a habit to tell those around me of what I'm doing and why. This form of manners and public perception is essential to my vaping experience. However, I have the right to do whatever I want if it is not harmful to those around me. I don't like going to a grocery store and seeing someone buy tons of alcohol, but I don't infringe on their right to do so. I suggest the same for you. Keep going down the isle and mind your own business.