Sam2 made some really good points - and I agree! In fact, it's kind of crazy that you posted this thread, Cats, because the same thought has crossed my mind. I think a lot of it deals with the fact that although the results of smoking cigarettes and SIing are the same, the reasons why people begin are usually different. The intentions are different... I feel though, that there is a very fine line that separates the two, and I guess that a very easy answer is that society is crooked.