There have been several mass extinction events in the last 500 million years that resulted in the disappearance of the majority of animal life. We're here today

There have been several mass extinction events in the last 500 million years that resulted in the disappearance of the majority of animal life. We're here today through the virtue of our (500 million years of) ancestors who picked up, moved on, and got right back to fucking. They probably weren't enjoying half-starving and watching their children die, but they kept at it. Biological imperative doesn't give a shit.