Exactly, its like binge watching a television show instead of piecemeal. You don't have the cliffhangers since you don't have to wait a week or a year to find o

Exactly, its like binge watching a television show instead of piecemeal. You don't have the cliffhangers since you don't have to wait a week or a year to find out what happens next. A key tool to build suspense is rendered useless. On the other hand, splitting a book that wasn't meant to be serial can make certain sections feel meaningless - they aren't meant to be taken separately. A perfect example is the movie adaptation of the Hobbit: you had two movies that felt unresolved and one movie that just dropped you in right before the climax of the book.