The second half of the book became a story much more than the first half.
Hemingway made sure we understood why characters were behaving as they were by making us live their lives and live every breath for half a book first.
Unfortunately, to get the most out of the second half you do have to suffer the first half learnings and that is not going to be everyone's cup of tea.
I am with Mono on audiobooks - at least for heavy duty reading. There is something to be said about hearing the voices in your head (
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) to truly see the people involved that I think you would lose being read to. With a lighter/easier style of writing I expect stories and characters can be clearly enough picked up by listening - just not something I have done yet and probably won't until they stop making the letters big enough to see with my glasses on.
Just as an aside - think about the poor bastard who was reading to you and is now stuck in limbo waiting for you to come back so he can finish before moving on to the next listener.