I watched that movie one day at 2AM all alone while my spouse was out of town, and it's really stuck with me since then, years later. Not sure what there was about it. I randomly remember scenes from the movie and it feels bittersweet.
My friend and I saw it in theaters, and when it was over we just walked out and didn't say anything to each other for like five minutes. I'm a huge Aronofsky fan, and this is his greatest work.