I find that the length of time it takes me to read a book varies wildly, seemingly independent of the 'difficulty' or length of the book. Some take months, some take a few days. The more enjoyable a book, the more engrossed I get and the quicker the time seems to fly by. What's interesting is that this is very subjective - I know of people who have taken a long time to read a book that has taken me a short time, but have taken a short time to read something that took me a long time.
What books took you a very long/short time to read? Do you think that we should give up on books if they start to drag on, or persist even if it means reading fewer books? Is it even worthwhile to think of reading as an achievement?
I'd like to hear your opinions.
EDIT: Thanks for your responses! It was interesting to read these comments, especially given the variety of responses and different points of view.