A lot of the developments around slowing down aging aren't just about doing so for the physical body - they also improve the longevity of the brain. Plus if you

A lot of the developments around slowing down aging aren't just about doing so for the physical body - they also improve the longevity of the brain. Plus if you're living for a very long time, that's a lot of time for science to advance. Unless you believe that things like dementia are totally incurable, it's pretty reasonable to believe that sometime in the next few decades we'll make big advances in curing or at least dealing with them.