I used to demand happy endings.
Mom gave me a copy of Beat the Turtle Drum (no, I never saw the Afterschool Special based on it) and I felt outraged and betrayed.
Later, older, I would walk out of movies if it looked like the plot was getting too bleak.
I still value comfort reading. I still prefer characters who have the capacity to be happy, even if they aren’t. But more and more, I find myself seeking out exactly the sort of stories I once would have avoided.
And typically, I write breakup scenes before I write the ones where characters get together.