I work with people with substance abuse issues. By and large, they are a breath of fresh air compared to fats. A smoker knows it's bad for them. They may give a bunch of excuses as to why they can't quit, but they don't try to sell you on the idea that smoking isn't that bad. Sadly, I have some clients who have been diagnosed with smoking-related illnesses. And they usually don't blame the doctors. They acknowledge that doctors try to help, but they didn't take the help. As compared to the fats, who will blame everybody but themselves.