Spoilers
I have read from the first book Dune to the final book by Frank Herberts son, Brian Herberts' Sandworms of Dune and I have to say I've never been more aggressively disappointed with a series. When I was reccommended the book I was told to just read the first book, I didn't listen. When did a book on ecology, political struggle, assassination, and messiahs turn into erotic robot war? The only one I liked in the sequels was God Emperor of Dune because Leto II was an interesting character but it was a bit of a headache to read.
EDIT: edited the title and some spelling errors