Literary masterpiece! I fell in love with Arrakis so much. Herbert created another reality of this planet by establishing its own politics, race, economics, culture, religion, and environment. 

The worldbuilding is the most complex aspect of the book and described imaginaries of Arrakis fell so real. 

The political story was very compelling and engaging. The characters have complex personalities and chatacteristics. All these aspects made Dune the genre defining literary piece with a story told on the existential level of Arrakis and other planets.