Earth Abides

An early example of dude-on-the-road post-apocalyptic fiction, dull and showing its age, but then it opens up into a rich, internal tale-- not without being problematic, mind you, but the story overshadows the sexism, racism etc in the last half-- with a flawed protagonist, his loyalty to industrialism and intellectualism, and a community that doesn't really need him or his attachment to the old world. Humanity abides, more like.