Humans are more than a dime a dozen, there are 7 billion of the pests running around using weapons of mass destruction just to deal with tiny microscopic fungi and centimeter sized insects. Humanity is the greatest pest on the face of the earth, they justify their meaningless existence with religion, art, or science. But it is never going to be worth any point as they are an ignorant species incapable of looking beyond the next pleasure until disaster, war, or disease strikes them one by one. Humans are a livestock race that lead each other into believing they are simply better than every other creature while stuffing their mouths full and growing fat when times are plentiful. When times are harsh all life suffers under their horrid heel even amongst themselves. Humankind are not deserving of the distinction of irreplaceable, more often than not they deserve extinction. The few who perhaps do their best to remedy and create harmony among their kind are rare and far, too far apart perhaps to create any meaningful difference that can save this world they live in as much as they have already destroyed beyond repair.