It's a masterpiece that one has to be mature enough to understand the allegory of.
It's about much more than a crazy man hunting a great white whale who is obviously not a physical whale. Even the one armed admiral who believed he was the Archangel Gabriel knew that.
It's the story of one's ridiculous quest for absolute dominate over others when they can not retain their own base nature.
And it's also a story of what happens when you get abroad a ship of fools.