Had it not been for wars, diseases, natural disasters, unrest, terrorism and extermination, the Earth's population would have exploded out of control a long time ago. This would have resulted in a global famine far worse than all of the above combined. So, if any of you are out there still talking 'bout how war is good for absolutely nothing, think about how it thins the herd, keeps the population lean and mean, and all the increased room to move around.