I don't know, I just felt like it
well to be completely lame it's because the redlettermedia guys have brought it up a lot of times over the years and it just felt like it was time
I really see why people say Joker was like baby's first Taxi Driver
I know I'm not going to be unique in noticing or interpreting anything about the film, but something that stuck out to me was how he was sort of a blank slate getting filled up by everything he experienced, every detail gets added to his life and becomes part of his obsession. he says he's gonna get one of those posters that says "I'm going to get organiz-ized" and later it's there in his apartment, he researches the senator running for president, he has to own the same gun the crazy scorsese talks about. everything he encounters that would just be an offhanded comment or experience for a normal person, he studies deeply and incorporates fully
it's kind of a dark fucked up innocence, not realizing that it's inappropriate to take a date to a porno theater...and later we see him trying to watch normal movies, like "this is what normal people do"
I also read about the crazy guy who was inspired by the movie to stalk jodi foster and attempt to assassinate reagan. thought it was really quaint by modern standards how part of his insanity defense was that he'd seen the movie more than a dozen times