Isrieri
My father told me this would happen
Although my real favorites are Princess Mononoke and Kiki's Delivery Service, if all their films were lost to history, the one I'd pick would be Totoro I think. I watched this religiously as a kid: It was fascinating (the story was so utterly bare bones yet I was totally engrossed) and heartwarming (I had never seen a film that was this unabashedly happy). I don't think I want to live in the timeline where My Neighbor Totoro doesn't exist.