Don't get the hate for the movie, as I thought it was fantastic! Most people don't understand the DC side of things, and think all superhero movies need to be Marvelesque. That's the problem DC faces coming in late to the party.
They could also make a good movie. The Nolan Batman trilogy was awesome. This was a mash up of two stories that didn't go together. Batman shouldn't have been killing guys until the very end, when he killed the flamethrower guy. Let Batman fake his death and assemble the Justice League incognito style. Let Superman "die" later. The false God stuff just felt way too contrived.