Although a lot of people were disappointed with mother! I enjoyed the film and thought it was even better on second watch. There's a lot of social commentary dealing with religion and how mankind has reacted to religion in different ways.
I think many people didn't like the film because they didn't think there was much of a story. I believe that mother! is more about how the film makes you feel while watching it rather telling a standard structured story. The problem is that most people don't like feeling confused after watching a movie. 9 out of 10 times I'd choose to watch a film like mother! over any popular Marvel movie.
The cinematography is great. Shot by the talented Matthew Libatique in 16mm film. There are many tracking shots in the film that are worth studying. The blocking pulled off by Aronofsky and Libatique is awsome. You can learn a lot about lighting motivation with practicals and camera movement from these shots.
My favorite aspect from this film is how Aronofsky places you in the main characters head through camera work and sound design. I was really able to relate to the sense of isolation that is felt throughout the film.
I've attached some screenshots below from a sequence of scenes later in the movie. I thought it was worth sharing due to the fact that the shots are pretty much identical but they take place during different times of the day.