I was surprised to like this as much as I did. Yes, there's misogyny, homophobia and so much patriarchy.  Sometimes it was dry as unbuttered toast.  However, the scope of the story won me over. 

There's sand worms and space witches. Multiversal experiencing of time.  I can see why it's highly influential in both sci-fi and fantasy. I'll be continuing through Dune Messiah and Children of Dune because the three books were already mapped out when the first one was released. Fascinating stuff.