I just thought about this one sort of because of fate. (No I haven't watch most of it, but it's still supposed to be good from all of you guys saying so)
When you know the ultimate goal from the start and you know more or less what is being built up to the entire time. I prefer more of the unknown ending, not sure what to expect, it could be anything. Kind of like the journey is all meaningless because no matter what happens, you'll still reach the same destination, regardless of what path you take. All be it, it makes sense with a series called 'fate/ ' though.