I know! My goodness Joker doesn't have a break from life. But, it's so much because of what you said @holm. I like this rationale very much:

He had such fragile structure around him that the whole thing would crumble in the slightest touch, which it did in a rather dramatic way.

Both Joker and Frankenstein stories brought to mind the famous quote by activist James Boldwin:

The most dangerous creation of any society is the man who has nothing to lose.

And yes ... you're so right! There is so much in that movie one can just go on and on analyzing, digesting. You get me already! 😅

Wish you and your girlfriend a wonderful weekend! :)