This is the ultimate necessary thing to do actually for human beings. All economics and social activities stem from the quest to live forever, though it's impossible to implement before. But today, technologies have made this promising. Believe me, it's not absurd at all.

Think about all religions, they come from the quest to live forever deeply inside human's unconscious, but today, technology and science have become the new religion, and its goal, in fact, is still the same here, because human beings never change much.

Combine biology and information theory, I think this can be done before 2500 A.D..