Is there really a meaning to human existence? We certainly have no positive impact on the world. We tear up the earth and pollute the air with our industry, we destroy the wildlife for: Sport, food, clothing, shelter, entertainment, ect. We remove unimaginable amount of natural resources from the earth, while destroying the habitat of thousands of species of animals, causing many animals to go extinct. Many of the animals that are extinct now or endangered wouldn't be if we weren't here. Not to mention there would be millions of more animal species if we weren't here because their habitats would never have been invaded by us, therefore allowing animals and plant life to breed and diversify with little interruption. Or...Could this be our purpose? Humans could be the single thing that ages and deteriorates the earth, much as humans themselves age and deteriorate. Is the purpose of mankind to destroy the earth? Think about that!