Not that I know much about psychology, but like Buddha said Change is the only constant in life. Even as children, exploration is at the root of all our instincts. Tell a child not to touch something or go near it, and he/she definitely will. As we get older, generally most people lose this exploration aspect of their daily lives in the face of jobs and careers. But the joy of exploration is always there and it always comes out when you learn something new or visit a new place, etc.