I can't divide my attention. I am either busy doing things or sit still to listen (and I mean actually listen) to either music, a radio-play or an audiobook. If for a moment my concentration slips it is easier to re-read the last few lines than rewinding an audiobook. And that can happen quite easily because one word can, by association, trigger an avalanche of thoughts that has nothing to do with the narrative.
While that happens an audiobook keeps on running, wholly unaware that I am not listening! A loud "Are you paying attention?" would help.
Also, with an audiobook much depends on the tone and style of the narrator. I prefer my own voice and interpretation the author's written word.
EDIT.
I forgot to add that I mostly read e-books, for practical reasons. E-books are cheaper, you can store as many books you wish on your e-reader and there's only that one object you need carry around, with a weight that's less than your average paper book (and I have a weird preference for door-stoppers.)