LOL, Branson!
That seems so foreign to me to hear you ask how one maintains interest in a novel. I understand it though, because my DH reads mainly non-fiction, although he will throw in a novel here and there just to break the pattern.
(He checks 3 or 4 books out of the library every week and started with stack #1 for non-fiction, A's for his fiction reading. I hope no one checks a book out between last week's choices and this week's!
)
To me, it is like the best movie I have ever seen, but it is rolling in my head. I often stretch out on the sofa until the wee hours of the morning because I cannot bear to put my book down. I just have to get to the next page, then chapter. Oh, phooey, finish the doggone thing tonight!!
That is exactly what I mean about our varied and diverse interests and tastes. And, isn't it a wonderful thing that there are people like you who love non-fiction and people like me who crave novels? The library stacks would need traffic lights if we all liked the same style of reading material!