Several things really bothered me about this movie, but the biggest was that there was no real suspense created. The movie gave away pretty much all it's secrets right away. I was unfamiliar with what it was going to be about and found it highly disappointing. Even when I see movies I know the end to I expect more suspense than this offers.
I thought all of the actors turned in brilliant performances; Nicole Kidman was emotionally driven, and all the other actors seemed to really do a nice job, including the Wives, who had to act perfect in unison. Even the oft-criticized Matthew Broderick made a good mediocre husband to his powerhouse wife, and I could see him wrestling with his decision, but it created very little drive for the story.
I think the bulk of this movie's problem seemed to be how it was all put together. It could have explored a lot of issues deeper, it could have been a lot more engaging, but it wasn't. The film couldn't make up it's mind what it wanted to be, and wound up being nothing.
Plus there was the robot/microchip inconsistency...