I don't know. Not having kids (who love to rewatch stuff over and over again), I don't really see much interesting there either. I don't rewatch old Disney or Marvel movies, and the only TV show that mildly interests me is "The Mandalorian".
They're going to have a huge catalog right off - not just cartoons and Star Wars/Marvel. Well worth the low price of admission, IMO. But "The Mandalorian" sells it for me, for sure!