Amy：Everyone told us and told us and told us… Marriage is hard work. And compromise and more work.
”Abandon all hope, ye who enter.” (The supposed inscription at the entrance to Hell. From Dante's Divine Comedy.)
At the end of the movie, Nick (Ben Affleck) asks his wife, who has come back from faking her own death, why she would even want their life, with the pain and the suffering.
Amy responds， “That’s marriage.”
Via: What does the line "That's a marriage" mean?
Nick: Look, you're delusional. You're insane. Why would you even want this?
Amy: Yes, I loved you.
Nick: And then all we did was resent each other, and try to control each other. And cause each other pain.
Amy: That's marriage.