However, for the right books, audiobooks can be even better in my experience; books where you want some "wisdom" and feelings more than concrete stuff, and where a peaceful, somewhat-slow is appropriate.
I listened to Lab Girl, an intimate autobiography, read by the author, and it was fantastic. I am now going over a book on buddhism, and because I don't really care about remembering the details of Maharana's life, I love listening instead of reading. With such a book, reading faster doesn't seem to make much sense, I wanna go slow and savior its lessons.
In any case, it's been a good complement to my traditional reading; even when it isn't the best way to read a book, it's a fantastic way to make the most of commuting or doing chores.
As an aside I highly recommend reading "How to Read a Book". I don't recommend studying every detail, there is a lot in there I don't think is particularly valuable, but some of it really shifted how I thought about and approached reading.
I didn't find it that hard to listen to Dune compared to listening to, say, Peter F. Hamilton's works. For me it all is something that becomes entirely attention consuming.
Your mileage may vary!