We can argue what is good and desirable, but we cannot argue the fact that suppression of diversity reduces our field of options and stifles the breadth of our knowledge. Having few options and little knowledge, we cannot choose the most ethical actions. The principle of diversity calls for proliferation of diversity in all its forms, including seemingly unwelcome phenomena like parasites and mental disorders. Contrary to popular belief, these phenomena are harmful to us only when they proliferate to the point of weakening diversity. Parasites often evolve into beneficial symbionts, e.g. bacterium Escherichia coli.
Mental disorders provide scientists with invaluable information about the human brain.
In general, a little bit of horror is a bitter but effective medicine against a cataclysmic horror. Let Us Expand Terrestrial Diversity To The Far Reaches Of The Solar System Biodiversity is threatened by the environmental crisis and by the human population explosion. The Earth is already too small to provide a protein-rich diet for the present human population. Wars, plagues, and family planning may slow down the population growth, but they are unlikely to reduce it to a sustainable level. We cannot stem the onslaught of starving throngs upon habitats of endangered animal and plant species unless we discover another habitat that can accommodate the ever- multiplying human population.