Hmmmm - I shouldn't be concerned because book length certainly has no bearing on whether I BUY a book or not.
However, I tend to find that I a bunch of reading commitments that sometimes get in the way of me picking that huge tome that I purchased - think Neal Stephenson, Peter Hamilton, Patrick Rothfuss etc..
I'm not as good at reading multiple books in parallel otherwise I'd read the bigger books in the background while powering through some of the books I feel the need to complete in a specific timeframe. I have promised myself that I'm going to tackle some of my bigger books next year.
Of course, I could always dedicate a lot more time to reading and the size of a book becomes less of a factor. Sounds like infallible reasoning to me.
