Arguably the best approach to dealing with this sort of thing is not the hair shirt use less medicine line of thinking, but rather to focus much more effort on creating therapies that work more effectively and for more people and under more circumstances. Then you won't see non-beneficial treatments in action so often.

Sadly, much of the present generation of medicine was created in an environment that prioritizes a focus on late stage disease state, discovery of proximate rather than root causes, and adjustment of disease state without addressing root causes. Making a damaged machine work better and longer is really, really hard if you don't fix the damage. Medicine is one illustration of this point.