"... Physicians really try to honor their patients' wishes, but when patients ask "What would you do?," we often avoid answering. We don't want to impose our views on the vulnerable."
Personally, I don't let a doctor "off the hook" by sidestepping the question. And I would not create a long-term relationship with a physician unless I felt he/she would give me their own view on such difficult matters. After all, they deal with these issues frequently, and if they withhold their opinion on this, then my emotional response would be - "OK, what else are they withholding", and my trust in their judgement is gone.