content: No, the only reason for anything to exist, in a state of consciousness, is purpose. People and the relationships between them create this purpose. Economies are created to support the needs of populations - replacing jobs that make the economy work does not make the populations they support obsolete. Programming self-preservation is easy. Programming the will to live is nigh impossible. Even if machines become sentient, they'll not be able to replace us. Terminators are not going to sprout out of the ground. Most experts believe the future of humanity will be a convergence. By the time robots are our equals, the distinguishing characteristics between what is machine and man will have evaporated. In other words, humans will be extinct becasue they won't exist as in contemporary times.