The reason why we aren't dead, is because we can reproduce quicker than we can be killed. Due to our intelligent. Yeah some animals aren't very clever and survive, but that's because they can reproduce so much. With us? We're smart as humans, and are able to survive. Eventually one day we'll get wiped out, either by a war, or a disease, or something else? But for now, we're alive, because we're smarter than death. - Jake