The primal fear of illness/death is the greatest tool of tyrants. Without the spiritual strength to recognize that illness and death are inescapable (a healthy medical system knows it is limited to mitigating suffering and tinkering around the edge of disease; it cannot eliminate it), people are vulnerable to the tyrants siren song of "safety!" The only solution is for people to learn that trying to "stop" all illness is a fool's errand, but this is as hard a lesson to learn as it ever was. Thousands of years of "evolution" have not made a dent in the human delusion that we can control illness and death.