That's an interesting observation. Which gave me pause for thought.
It actually strikes me as a very good thing to have a childlike fascination with stuff. When we're children, we have this amazing relationship with the world where it's so fresh and exciting, right? We haven't filled ourselves up with preconceptions and biases and so forth.
While I think having childlike emotional responses is problematic, especially for adults, the capacity to push aside prior experiences and see stuff anew seems like it can be really great, at least insofar as entertainment is concerned.