A few things to consider about robots: * They require high tech manufacturing to maintain * They require a power source (electrical, hydraulic, etc) Humans w

A few things to consider about robots: * They require high tech manufacturing to maintain * They require a power source (electrical, hydraulic, etc) Humans while not maintenance free... or power source free (food is a powersource) don't require a ton of technology to get working. While the quality is probably not as good as a robot due to an inability to be perfectly consistent it can be good enough.