It came to me when I tried to classify your species. I realized that you're
not actually mammals. Every mammal on this planet instinctively develops a
natural equilibrium with the surrounding environment but you humans
do not. You move to an area and you multiply and multiply until every
natural resource is consumed. The only way you can survive is to spread to
another area. There is another organism on this planet that follows the same
pattern. Do you know what it is? A virus. Human beings are a disease, a
cancer of this planet. You are a plague, and we are the cure.