Our track record on cures rather than palliative treatments is abysmal. So yes, let's research disease and cures. Let's consider quality of life and the wishes of those involved above all. A greater element of the system not squarely focussed on profit would be helpful.
For many forms of cancer we actually have one of the few exceptions. Survival rates from cancers are far higher than twenty or thirty years ago. Often healthy survival at that with full remission.
For those unlucky enough to have a terminal condition (and regardless of progress there will always be some), or riddled with chronic conditions and infirmity, let's allow them to pass with dignity, when and how they choose.
My dog had a better experience than my father. My father knew his time had come and didn't want his last six months of bedridden suffering. He didn't want it for his family, especially wife, either. Neither my father nor I believed in a life after, and accepted this was it, so there was no bullshit of "going to a better place".
I also want more acceptance of death and better treatment and consideration of those dying. We can't yet abolish it.