There were, however, so points that I did find interesting. Over and over, I found phrases or descriptions indicating a lack of reality. Malow told the story to people who had never seen Africa and most likely never would. Everyone in Africa knew that what they didn't wouldn't make it to the "civilized" world. Other times, as Malow tells the story, it sounds as if he doesn't believe he was really there. Everything takes on a dream-like state. Even the setting, a man telling a long-winded story at night to men who are falling asleep, indicates a non-real quality to his story. This feeling of no reality (and therefore, no consequences) sets up an environment where a good man like Kurtz can become such as savage. Even Malow becomes apathetic because he doesn't believe what he does has any consequences.
Heart of Darkness could be a book about obsession -- Kurtz gets so obsessed with money that he looses himself and becomes evil -- but that obsession came from apathy. Stop caring about the future, stop caring about others, and you're open to be overcome with greed.
And, as Kurtz so vividly shows, greed leads to destruction.