>>45010891That's being a teenager, when you actually grow up you go back to appreciating fiction aimed at children for what they are, now that you're out of your formative years and most fiction purporting as deep is just a different shade of "good things good, bad things bad", especially in the current age of extreme partisan moralism.
So you revisit a work trying to evoke childlike wonder, and the nostalgia hits full force, because it's not nostalgia for the fiction, it's nostalgia for a time, a snapshot of culture that you see as better. That's how nostalgia works.
It's not just "I clapped when I see childhood thing". People with rough childhoods can still feel nostalgia because they're able to see the bigger picture beyond their own personal family experience.