I'd strongly caution about ever trusting a doctor who smokes. A random person who smokes is usually only thinking about themselves when they consider the worst case scenarios. They've probably never really been around anyone dying from any cancer, let alone seen someone in the later stages with lung cancer.  A doctor knows what cancer is. He knows what the emotional impact is on one's spouse, kids, friends, family or whatever. The increased chances of cancer with smoking are a little exaggerated. But it's still high enough that doing so is essentially a choice to put it on the table. Not quite a coin flip, but close. And accepting that, for someone who actually understands what cancer entails for anyone who loves the person, is evil.