Continuity mistake: The car at the arresting scene was boosted by Baby a couple scenes earlier. When he gets arrested, he suddenly has a key of the car and turns off the engine. How did he acquire the key of that boosted car?
Continuity mistake: During the shooting between Bats, Darling and Buddy with the guy in the white suit and the "cops" Darling gets shot in the right arm then she keeps shooting and moves back, but in the next shot she is at the front again.
Visible crew/equipment: In the opening sequence where Baby and his gang are riding away just after the bank robbery, and they finish in a car parking to leave their car and get into another one, a cameraman and another crew member are reflected on the car door window while Baby opens it.
Continuity mistake: Darling got shot in the warehouse but in the diner she has no blood on her arm or the sweater.
Continuity mistake: Towards the end while Baby is being arrested at the bridge, the sun changes between shots.
Continuity mistake: We see a close-up of Buddy being shot in the leg, with blood, but in the very next shot, there's no blood, or hole in his pants.
Continuity mistake: In the scene towards the end where Baby is pushing Buddy's car off a multistory parking lot, after he says "Fuck you, Buddy" he uses a stick shift. However the truck he's using is a 1989 Chevrolet Blazer K-5, which does not incorporate a stick shift, only a column shift. As evidenced by the next scene when Debora uses a column shift to put the truck into reverse. The trucks are the same in each scene, also evidenced by the bullet holes in the windscreen in both scene.
Visible crew/equipment: When Baby is in the car that he stole after running away from the mall center and he crashes against the back of the pickup, you can see the cameraman and the crew member on his left reflected in the rear window.
Continuity mistake: The shot of Baby's car being crushed begins with the proper Ford Taurus, but the car being crushed later is actually the 3rd generation Infiniti G35. (00:33:22)
Plot hole: When Doc outlines the plan to rob the Perimeter Trust bank in Dunwoody, he says it's "right next to the Buford Highway" which allows for a quick getaway. In reality, Buford Highway is multiple miles away from Dunwoody, with the section of the road the truck chase quickly transitions to being nearly 7 miles away. Similarly, this segment then quickly transitions to the John Lewis Freedom Parkway just east of Interstate 75/85, which is another 4 miles away.
Answer: Baby had spent years being coerced into a life of crime, something which he was never happy with, and by that point had gotten tired of continuously running from his problems. He surrendered because he knew he had done a lot of terrible things and realised it was time to pay the price for it, as well as that he did not want Deborah to go through the same life of crime that he has gone through.
Casual Person