When we parent a game object to another game object, we make the Transform values of the child object local to the Transform values of the parent object.
This is very useful, if used correctly. In the above situation, we have a character holding a ball. While we move the character with the assumption of still holding on to the ball, we can simply move the character. As it is local to the character, the ball moves with it. However, this does not work when we parent seperate objects containing `Rigidbody