I find this thought provoking. When my father-in-law died, the coroner declined to do an autopsy as he was over 70. Essentially, for anyone old enough, an autopsy is considered unnecessary as death isn't all that unlikely. In some respects, that is a sensible position. However, my father-in-law's death was slightly mysterious (in the medical sense; no suspicion of foul play) as he was extremely healthy and HIS father is still alive at 100.