What if all the wars started by all the egocentric ghouls in the world today were fought by them alone? What if no one joined any army in the world? What if every person on Earth stood up for their rights and demanded new worldwide laws that banned army recruiting. Why not have laws that make those who start the wars must fight the wars by themselves.
A lifeless island could be used for fighting all wars with only the bloodthirsty ego driven psychopaths fighting and murdering each other. Meanwhile the rest of life can get on with living in peace and grow old helping save the Earth instead of destroying it.