Children haven't been around long enough to learn all the rules. So when they sit down to draw, they don't make logical connections. Their thinking isn't linear. That's why you get cyborg dinosaurs or things like Axe Cop. It's similar to divergent thinking.
Adults know the rules and have been conditioned by their experiences to think a certain way. That interferes with brainstorming and limits potential ideas. But we can change the way we think and come up with ideas. You don't have to be immature to be creative.
"Astronomy offers an aesthetic indulgence not duplicated in any other field. This is not an academic or hypothetical attraction and should require no apologies, for the beauty to be found in the skies has been universally appreciated for unrecorded centuries."