Audio problem: After Bruce escapes from the pit, he and Selina talk under a bridge. Bruce says "I admit I was a little let down" but his lips aren't moving. (02:01:17)
Audio problem: When the first stock broker is shot, the time between the shot and the recoil is far too long; over half a second, when it should have been instantaneous.
Audio problem: Inside the well, when Bruce is about to take the final leap, the inmates are heard shouting "Rise!" in one single perfect cry, yet when the angle focuses on them no-one's mouth is in sync with the sound. Furthermore, no one's mouth is in sync with the inmate next to him.
Audio problem: After the military tell Blake that he can't cross the bridge with the kids, he tells the boys to get in the bus. The second time he says it, there's a side angle of Blake where his mouth is not moving at all.
Audio problem: When Batman and Catwoman meet at the sewers, the angles of her swap between frontal and side shots. During a side shot, she says the word "slate" but the audio is way out of sync with her lips.
Audio problem: When Batman meets Catwoman in the tunnel to meet Bane, her lips don't move when she talks, then her lips move when she is not talking.
Answer: He wanted to start a new life, which means shedding all aspects of his old one. Bruce Wayne was still a person of interest in the Gotham Wall Street scandal, with his death, his will would provide for and aid all the people affected by it.