yeah... or incompetence on the part of the docs... or our deficient technology... many factors at play.
since i'm in the med field. i would say... it's a little bit of everything. docs are only given a few options on how to treat patients (which themselves are not fine-tuned yet)... a lot of them also... aren't very resourceful from what I've seen. with technology, there are still tons of medical innovations and discoveries that need to be made. and finally, with money... sigh... some people just like to take advantage when presented the chance. it's reproachable... but 'tis what they call... human nature.