I totally see where you're coming from. The ending is really weird and doesn't seem to fit with the rest of the movie imo. But I feel like a lot of Miyazaki movies are like that. My favorites are (in order) Spirited Away, Porco Rosso, Princess Mononoke / Howls Moving Castle (it's a tie), My Neighbor Totoro, Kiki's Delivery Service, Nausica of the Valley of the Wind, Castle in the Sky.