Heavy heavy movie. It's so depressing I honestly have no opinion on whether it's a good film or not. I really like Tom Cruise in this movie though, it was interesting to see him share screen time with so many other talented actors. At times it felt almost over-the-top sad/dark but i feel like this is a movie where your opinion changes every time you watch it.
Haven't finished it. It's sat on my dvr for about two years because of exactly what you said about it being heavy