"That must be my job from now on! —-To see that humans get their second chance!”
From Kamandi: The Last Boy on Earth #4 by Jack Kirby
Even though Kamandi was originally conceived to cash in on the popularity of Planet of the Apes, Kirby couldn’t resist turning the titular character into a superhero. Rather than simply trying to survive the harsh world left after the mysterious disaster, which left humans enslaved by animals, Kamandi sees liberating people as his job, even if he is the last boy on Earth!
Although Kirby doesn’t identify the “disaster” that led to the world of Kamandi, it’s probably safe to assume it was the result of nuclear war. The irony, of course, is that humans are responsible for their own demise. Despite that, Kirby, ever the optimist, knows that humanity, even at its worst, deserves a second chance.