From my point of view, longevity is not up and neither is quality of life due to modern medicine. Aside from some of the most fundamental medicines (penicillin, insulin, setting bones, etc.), it has yet to be proven that most forms of healthcare are not parasitic in nature. I.e. that whatever increases in longevity and quality of life are not due to modern medicine, but confounded because both have increased at the same time.
What is your evidence?
So what are the increases caused by? And what does it mean exactly for something to be parasitic? What is "both" referring to in your comment? Do you mean the relationship between lifespan and healthcare is correlation, not causation?
Also, what kind of research do you think we should be doing instead of pouring more resources into "modern" medicine?
If I had a philanthropic vehicle with unlimited funds, I would put out grants for further research into psychosomatic (and somatopsychic) disorders -- as well as the placebo effect. But I don't; and to ask others to do so where no incentive exists for them is foolish.
I think useful tools are being left on the table for the treatment of illness, because everyone involved is uninterested in anything more than self-interest.