I doubt many of the movies are better the second time around. But I watched The Avengers more than once and I liked it the same amount both times. I'm sure some of the better ones hold up. (I.E Infinity War) I think if I watch something like Thor Ragnarok or Black Panther again I'd have a significantly lesser opinion of it. Now that I've listened to others analysis and opinions of it. But I was already pretty cold on those.