I hope I get to live long enough to see clinical immortality become a reality so that I would never worry about becoming too worn out to work.
Could rejuvenating (and age-reverting) treatments ever come along so that we can revert ourselves and keep ourselves in the prime working condition (in the bodily condition of someone aged 18-25) indefinitely, in a Millennial's lifetime?
How are we coming along with fighting the aging process, and aging-related diseases?
What will nanobots do to help us keep feeling young and being as healthy as someone young?
What will the Technological Singularity do? How would it keep us in our young, prime condition?