Like a dream. You don’t ask why it started and so, you shouldn’t question why it ends. There is no rhyme or reason.
There are times when you want to extend a dream, trying to create in your head new frames in that storyboard that continues on and on. But it’s gotta stop at some point, one has gotta wake up at some point, the night does not go on forever.
At that point, the story that you have so painstakingly built, block by block, stops abruptly. Nobody will ever know what might the next frame be. No one can explain why it just stops. There really is no rhyme or reason, that’s why.