The isolation of the two main characters in The Road is pretty extreme. God has seemingly abandoned them, and they have totally lost contact with other decent people. For The Man, isolation compounds into something resembling alienation. His memory of a previous (and better) world makes the one he's in seem all the more desolate. However, McCarthy tempers the isolation of his novel with an endearing father-son relationship. For most of the novel, the two have each other – and that makes the isolation shared, at least.