No, and I never have and never will. Still, I don't have anything personal against people who do and think that that shaming stigma thing that some people like going for is both unpleasant and a mistake.
Zizek claims that the 'stigma' you refer to is a reaction towards the spectacle of people openly consuming a product with full knowledge of its potentially detrimental effects; this in an age of products deprived of their detrimental effects: chocolate laxatives, SUVs that are good on gas, diet sodas, and, of course, electronic cigarettes.