One of the strengh of algorithmic is the stress model which evaluate the best way to taking into account the worst case scenario. A gifted human could do it but it does not have the right to error. It saves time and security that bring the serenity to the investor.
Humans will always make an emotional mistake in the long run. No way humans can be unbiased with numbers and stress when it involves money.
Bots are the future for most things that involve money:D