I can remember vividly the first time I read Harry Potter and the Order of the Phoenix. I'd haltingly made my way through the first half of the book, putting it down and picking it back up again. As much as I enjoyed it, and I did, it just didn't seem to hold my interest. I reached a little over the halfway mark at midnight and decided to finish the chapter then call it a night.
Except the chapter ended in a cliffhanger. One more chapter turned into another as the book raced to its sad conclusion. At four in the morning, I closed the book, tears and sleep blurring my eyes. I've always likened it to a roller coaster. You inch along up and up and up. You have time to take a look around, think about the other rides (read books here) you could be on. But once you've hit the downward slope, there are no brakes.
That sums up reading Mort perfectly.