Extinction is inevitable for all biological species. In fact, the vast majority of all species that have ever lived are now extinct. Since all species die out eventually, there is no justification for trying to protect species that are presently endangered, even those that can be saved from extinction now. The reasoning in the argument above is most closely paralleled by the argument that there is no reason to ['spend money on preventive maintenance of a car because no car can last indefinitely', 'look for a book in the library because it is sometimes checked out', 'take a route that will avoid the normal traffic jams because traffic jams can occur along any route', 'plant a flower garden in soil that is not beneficial to plants because the plants are likely to die in such soil']