It's a self-destructive conflict, but if their enmity was the sum total of the show, viewers would've checked out early. Instead, the show's creator, Graham Yost took these adversaries off on side routes. Both men go on different paths and almost succeed in creating fulfilling lives, only to ruin them with their unending conflict until all they are left with is the sole, immutable truth that has bound them throughout their wasted lives: "We dug coal together."