They may have taken this into account, but the worse equivalency in my mind is that a second saved today is equivalent to a second decades from now at the end o

They may have taken this into account, but the worse equivalency in my mind is that a second saved today is equivalent to a second decades from now at the end of my life expectancy. It seems like even a conservative discount rate would completely eliminate any perceived time loss. Computing the discount rate in light of the probability of the singularity or skynet is left as an exercise for the reader.