Counter point: Repeat viewings are much more enjoyable when you get to revisit and emotional experience feeling of watching the movie for the first time; if that movie was spoiled the first time you watched, there’s not emotional experience to latch onto that makes the repeat viewings so rewarding. This is why I’ll still rewatch a lumbering, imperfect movie like, say, Interstellar over again, because the twist was so unexpected — had I known the ending going in, I think it actually would have led me to notice and get annoyed by the imperfections of story and film, not have a increased “aesthetic appreciation.”

Same goes with knowing for future; it’s wouldn’t be as much fun to reminisce and indulge in nostalgia and have pride in all the thinks you put up with and overcame if you knew what it was going to be like the first time through.