I stumbled across a blog Neil Gaiman did about audio books back in 2011 and he made two excellent points -- excellent then and probably more excellent now. Pay attention to your audio book rights. Don't hand them over without a second thought (as we all used to do for years and years). And if you hold your audio book rights, think about doing something with them. Like ACX. Not that I haven't had my issues with ACX, but so far they seem to be the best solution to the problem of the humble rest of us affordably getting audio books produced and distributed.
The other thing that softened my stance was hearing from readers for whom English is a second language. And readers who have physical challenges reading. For both these sets of readers, audio books are more than an indulgence. In some cases they're a godsend. Not that I have ever been anything less than enthusiastic about audio books. Both as an author and a reader. In fact, I've started buying more audio books than ever.
I've read blogs where authors chose two narrators to do a book together -- splitting up male and female parts, for example. I wonder how that would work...
BUT they've started giving authors more promo copies, so that's pretty neat. You readers will definitely benefit from that. And so will I, I do not doubt.