If a movie is great I have no problem with how long it is. The perfect example for me is “Seven Samurai”. That film is 3.5 hours but it’s so masterfully made that not a single minute of it is “fluff”.
“Whoever fights monsters should see to it that in the process he does not become a monster. And if you gaze long enough into an abyss, the abyss will gaze back into you.”
