What’s something adults underestimate about children’s books?

What’s something in children’s books that adults underestimate?

I’ve been reading a lot of discussions here lately about story comprehension, repetition, illustrations, rhyming, etc. and it made me curious:

What’s one thing about children’s books or reading with kids that you think adults often misunderstand or overlook?

Could be:

• pictures/illustrations
• repetition
• “easy” books
• rereading the same book 100 times
• interactive reading
• chapter books too early/too late
• letting kids pick books based on interests
• anything else you’ve noticed as a parent, teacher, librarian, or reader

I’m realizing there seems to be way more going on developmentally than just “can they follow the plot yet?”