It's a standard requirement Kerstin in all professions that you never just "give the patient/client/student/etc what they want". I don;t just put whatever the client tells me on their tax return, I have a legal, moral and professional duty to save them from themselves by only doing what can be legally justified.A doctor has similar allbeit less clearly defined obligations to decline elective treatment where it isn't appropriate.If they're going private, then yeah, let them do whatever they want.
