Ok ive come to the conclusion that Elyos have earnt the right to be wiped of the face of the planet for one simple reason......They have sunlight now its a proven fact (if we assume that the people of ateria are simmilar in composition to humans ) that there bodies are made up of water and thus the constant sunlight will have obviously destroyed there bodies ie mutating them into something that isnt human and thus they must be destroyed to prevent infection of Asmodae and the people of that hemisphere .