They're really not my kind of movies, turned me off Nolan entirely, despite Goyer probably being responsible for a lot of my issues with the movie. But I gotta admit they seemed to resonate with other people so I can't say they're bad.
I got a lot of not muh with it: I don't particularly care for the entire League of Assassins thing or how it played into his origin, in fact I don't care at all about how Batman learned his skillset, I also like my Batman to smile and make me hopeful sometimes (no, that's not just a Superman thing), I like my Joker to not pontificate about his motivation (especially when his motivation can't be boiled down to a twisted sense of showmanship, pic related), I like my Catwoman to not have the face of a sweet 10 year old, I like my Gotham to look a little anachronistic and weird rather than a normal as fuck 21st century city, ...
Objectively they succeed in lots of aspects but fail laughably at others, notably fight scenes which is kind of a big thing in cape movies. Another thing is people liking the Joker more than Batman, that's imo a failure as a movie when you tell the story of a madman failing, and people want to emulate him. They just didn't make Batman cool, likable or even personable enough, so faggots rooted for the edgiest Joker yet to apppeat on film.
Almost nobody in these movies feels human to me (Dent being a notable exception, probably the performance), they just do things and say things because the script says so, and since I'm not particularly into the things they do and say, I just get bored.