Teaching medical ethics: useful or useless?

The practice of teaching Ethics in the classroom is waste of time. Further, medical ethics differ in different societies. There is no such thing as the Universal Truth.
I agree with Ms Susanne Stevens - Ethics should trump the Law. A price to pay? Yes. So be it.
The medical profession in the UK is composed of individuals with disparate antecedents and a very limited knowledge of what is " acceptable" .
It would be far more useful if in the medical schools ( in the UK) the students in the clinical years were to learn medical ethics as practised here these days. It would take longer. But at least the students would learn the practical issues and discuss them. Here, the patients AND their relatives and friends, would be " honorary teachers".
Doctors who qualified abroad and go straight in to hospital junior grades will need help and guidance from long serving nursing and other staff including the consultants.
Did I hear someone say that my suggestions are superfluous?