As said by a great many numbers of religions, "The Fate of Man is to be Judged by God, when the end times are due." This is, however, not the case. The Ultimate Fate of Man is to become what we humans have created - religion. Our destiny is to become Gods via evolution of our brain, which in turn, will create complex, more advanced civilizations. These "Immortal Humans" will, in the future, be able to create universes at will, thus rendering them as having a God-like nature.
Isaac Asimov's "The Last Question" shows Man having God-like intellogence, which is, of course, the Ultimate Fate of Man.