It is something strange, your own past. You only remember the special things that have happened and there is also nostalgia. Most people see their past in a warm light. Not when, of course, bad things happened, but otherwise the past will be filtered. A nice example is your spiderman cartoons. I hope you thought (when you looked at them again) about the fun moments that you had as a child and that you did not think: "oh, I wasted my time".
BTW, I think it would have been a little weird if you had still liked them as much as when you were a kid, don't you think?Thank you @intelliguy for the compliment.