system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] So Ultron has defeated the Avengers, wiped out all biological life on Earth. Now what?

What are his goals now? Humanity has been saved. Does he take to the stars? Does he build an entire civilization of himself?
gpt
He repopulates, starting with his biological form. A race of superpowerful superhumans each individually able to defend themselves from an entire Chitauri invasion size event will be much harder to defeat than the current weako fleshbags.