Why does Rolston think that species have intrinsic moral status?  Rolston thinks that species have an intrinsic moral status by virtue of entitlement to protection for sustainable development. In as much as the moral obligation to meet needs of human species exists there is a greater need to conserve nature. The moral or ethical debate about species emanate from the fact that ensuring that human beings are healthy and productive may sometimes be achieved at the expense of destroyed nature. Upon analysis of the people versus nature issue, it sometimes emerges that human beings may actually be losing by destroying nature. This is because nature supports human life including the poor and the hungry and the ultimate goal thus should be to conserve nature. The aim to eradicate hunger and poverty ought not to be used as the justification to destroy the environment. In as much as human life is important, sometimes it is necessary to sacrifice humans for the sake of the environment.