I held on reading to the Dune series to get to this book due to the sheer weirdness of its premise. I cannot recommend anyone else do the same, and given the chance to do it again, I would not. God Emperor provides some fun philosophical monologues in its first couple of chapters, but this quickly descends into hammering on the same three points over and over: the characters' horniness, the importance of eugenics, and how icky Duke Leto II Atreides, Duncan Idaho, and Frank Herbert find homosexuality (this book marks where the homophobia of the Dune narrative, to quote Sonny from In The Heights, shifts 'from latent to blatant').

I honestly cannot recommend this book to anyone. Instead, I strongly recommend reading the synopsis on Wikipedia - It's a wild ride, and I promise you the story you imagine based on it will be more enjoyable than the one Frank Herbert wrote.