Simply enough: dopamine. This is an enjoyable experience for them, it is actually designed to be. This is how you sell tie-ins and make profit, the younger you

Simply enough: dopamine. This is an enjoyable experience for them, it is actually designed to be. This is how you sell tie-ins and make profit, the younger you get them the deeper they're caught in. The side effect is that it is destroying their attention and impairs their self-development and cognition. Also the human brain is a sucker for a good story, before screens and videos, kids were addicted to bedtime storytelling and could ask being told the same story a lot of times.