Well, I do like being safe from other people's smoke. I want to save up my somewhat clean lungs for people I've known or will know and end up spending time with who are smokers. I think that is plenty of smoke. So, you see, I don't have a lot of reserves if you think about it that way.

I think that you may have covered in the OP a lot of the pros and cons. And I'm really unfamiliar with it and don't have an opinion.