Some advantages I have experienced:
When I read James Joyce "Ulysses" several years ago, it was somewhat difficult to follow the narrative. I then listened to it as an audio book with a half a dozen good actors reading the parts and the book came to life for me.
I have some arthritis in my hands, and any time not using a keyboard, holding a physical book, or an eBook reader helps.
When I am working in the yard, cleaning up the kitchen, etc. it is good to listen to a book.
The one thing that bothers me is the possibility of losing a large investment in Kindle and Audible books if I ever lost my Amazon account. I mitigate this somewhat by buying some eBooks and audio books on Google Play and on Apple's store. --> don't put all of your eggs in one basket.