IMDB reviews:
http://www.imdb.com/title/tt5109784/reviews?ref_=tt_urv
They seem to be more informative as to why the movie is bad.
"The whole movie is Allegory! And that's what you should keep in mind while watching it."
"Aronofsky is well aware of the fact that history repeats itself, and unless humans decide to take responsibility for our actions and stop the endless assault on Mother Nature, we might wake up one day to find that she has no more love to give."
"Jennifer Lawrence was representing "Virgin Mary"(that's why the film is called "Mother!") and also the "Home", "Earth"... Simply "Hera"- goddess in Greek mythology. That's why she had such a strong connection with the house! Trying to protect it from all of those guests trying to destroy it. She was getting crazy and feeling sick, when the house was being destroyed and hence she saw the blood in the house only in those moments etc"
"Without discussing the metaphor this would be a very hard film to review (because that is in essence everything), so let's get into some spoilers. As I understand it, Javier Bardem's character is 'God' or 'Him' as he is listed in the credits. The film serves as a commentary on how (according to the Bible at least) all God wants is attention and to be loved, no matter how many people in the real world have to be destroyed, killed or blown up for him to achieve that."
"In a nutshell..... The story of a writer-blocked poet (Bardem) and his beautiful young wife (Lawrence) who has adoring fans (including Ed Harris and his wife Michelle Pfeiffer) that flock to his home just to be in his presence. Forgive the run on sentence........Harris is dying of cancer, his two sons arrive to fight over his money, get into a fistfight and one gets killed, more fans arrive, Lawrence goes into labour, fans start to riot, tearing the house apart, she has the baby, he wants to show his fans, she says no, he sits and stares at her for days, she falls asleep, he takes the baby, shows his fans, they grab the baby, kill it and eat it, Mom goes nuts, runs to the basement with a wrench, bashed a hole in the oil tank and sets it on fire and blows up the whole place, Bardem carries her charred body, sets her down and proceeds to reach in her chest and take out her heart, with her permission. He squeezes her heart til it turns to glass, sets it in a stand, the next scene there's a new wife and the whole thing starts over again. There! Just saved you $10........you're welcome!"