Top Ten Movies With the Most Confusing Endings

I think these movies' endings are most confusing .Sometimes I couldn't understand a bit of the movie when I was young .
The Top Ten
1 Donnie Darko
2 Memento
3 Shutter Island
4 2001: A Space Odyssey
5 Inception
6 Birdman
7 The Shining
8 Total Recall
9 Interstellar
10 Looper
The Contenders
11 31

You don't know what happens. You can only infer.

12 Enemy
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