As well as being perversely pessimistic for a blockbuster, it's rendered tedious by a dense plot and lifeless characters. Even M Night Shyamalan would have done a better job. How dare such an empty film ask us to endure many realistic scenes of carnage?
I like the sheer quantity of ideas in this film, but I am not sure that they all fit so nicely together. I expect with some thought the flaws will seem less important and the audacity of the plot will win out.