I just saw the film yesterday and it was nowhere near as depressing/violent/deep as all the hype suggested and I found the plot pretty predictable but then I realized maybe that was because I interestingly found myself to relate to the Joker quite a bit - particularly the rage and need for vengeance.

I did some googling out of curiosity and found a few theories suggesting he had BPD. Did anyone else feel the same?

As silly as it seems walking out of the cinema it made me feel like a bit of an outsider that I related to him.