Here's the thing: I am not only a creature of civilization, I'm an asthmatic person. I will only live so long as I have stockpiled the proper inhalers. I'm effectively a cyborg. You know how in Jurassic Park, they bred those dinosaurs with the lysine deficiencies, so if they ever got off the island, they'd die? That's me.
The only reason for the existence of a novel is that it does attempt to represent life.