Hot damn, this film was something. Safdie bros knocked it out alongside Sandler. He spelled it out for KG in the end, it is all about the gamble. The dude knows he has issues, but the only time he is happy is when he is gambling and hitting that high again. Every single time something goes well, he fucks it up. Then he gets blessed again... and the same thing with every single person in the film giving him an out. There is not a single person in this film that actually fucks him over by the end, he just loves fucking himself over.
My sole issue is how spelled out the ending was from the start and me sitting their, waiting for it the entire time. I was screaming when he went to unlock that door.