I just stole candy from a neighbour's child
Why on earth would you steal candy from a kid?
Because I'm a bad person, I believe that it's right for people to steal from children.
I'm not sure why you think it's okay to steal from children, because it certainly isn't. You shouldn't take things that don't belong to you, especially from children. That could have very traumatic for the child.
How will it traumatize him. It's a child. He'll forget about it in a couple of hours.
Children can remember more than  you think. And children deserve as much respect as other people. It is their property and you should keep your hands away.