I find audio books/news/talk are fine if you have a boring visual task (driving, showering, sunbathing, etc).
I need a visual book if I try to do it when I don't have something to otherwise occupy my vision.
I just wish buying a book included all formats so that you could enjoy it without trying to force a poor format on the time you have (such as paper when driving, audio when sitting around the living room). At least I'd love the e-text with the paper version, since the costs there are nearly zero since paper is printed from e-text these days. But I do understand that an audio version is a significant expense in addition. At least, until a decent text-to-speech program is developed!
Until then, I've had to get used to having several books going at a time... some in audio for the long commute, others in ebook for filling momentary blocks of free time, and a paper book for home (or the rare longer than battery life plane trip).