The fact that people are doing it, doesn't mean it is the 'right' thing to do. The fact that the law is allowing these businesses to continue to operate shouldn't be an indicator that you should put your money in these businesses. Smoking is legal, but should you do it? What's your own value? What price are you willing to pay to get the things you want in life? Some people are willing to do anything, even if it's on the expenses of their closest friends and families. To them, it's absolutely justifiable.

The whole discussion available here...