@ Stephanie

Hmm...considering what you have said about how we human beings have prided ourselves with advance technologies and such, I would say that an interesting story from our generation that future generations should learn about is a movie called "Gattaca." Although Gattaca doesn't exactly look into chasing  immortality so much as the idea of "perfection" in a world that is ruled by eugenics, it does share the same themes of achieving something to be remembered by before death and of death looming over the individual that is similar to how Gilgamesh was trying to escape death in the Epic.