None of the grown up human can think like a kid, when we are kind our mind is free from evil deeds and we have a great creativity lies in us, but as time passes these characters fades and makes us as machines of real life. Even in bible we have a reference which goes like this a man should be reborn as a child to enter the kingdom of God. Here reborn refers to the thinking and not the physical one. Even god wants us to be like a child in thinking which we fail to do. Its not that we can be as a kid again, we can try to be one but the external world we live is influenced with more evil which tends us to behave as one of them.

