My point (on any charitable, contextual reading) is that there is no necessary reason why doctors do not add value, and so simply asserting that they don't without further support is bad. Good ol' charity and context.
No reason but the Hanson research that others were referring to in the er, context of the thread. If you prefer to just characterize those who disagree with you as failing to see the value of healthy people, that's up to you.
A feature in Scientific American magazine casts some light on the troubled state of modern medicine.
Health Care Myth Busters: Is There a High Degree of Scientific Certainty in Modern Medicine?
Short excerpt:
Scientific American often gates its online articles after some time has passed, so I don't know how long it will be available.