[Bean 2]

Originally Posted by Noctis

Unless they've figured out how to clone through some process using stem cells or the like. They are machines and if the Matrix is approximately 600 years old, then it's somewhere around the 28th century, so an advance in the science is all but inferred.

I think noctis is right with the cloning. Those pink pods that extract BPUs from the humans produce images or the Matrix in our minds. We live out our live until our energy is depleted. Machines took over at one point in time and realized that humans could be a reliable source of energy and they continue to clone us to keep producing energy.