I always thought Kishi dragged out Sakura's love for Sasuke for some big climax or something, so I never tried to make sense of it. When you are developing a character a certain way, not for the sake of the character, but for the sake of the plot, it isn't worth pondering about it.
If Kishi was planning to make SS the real deal tho, I thought he'd at least put some light on it. She could've tried to understand him, but then she pulled that "If you love me Sasuke, stop this!" crap. She just made it all about her again. :/ And there was no purpose of that genjutsu murder in the end either, it was just pure cruelty. Even in the midst of Sasuke's "darkness", his love for Naruto always peeked through. His love for Sakura didn't, until he was "saved". ugh, such weak storytelling. Trying to analyze this kitten feels like an insult to all of us. I'll just remember the characters I came to love, the characters in the ending can hardly come of as bad impersonators lmao. I'd just forget about them. x)
Everything after Pain arc seems dragged! That child of prophecy and then the war arc, the preparations...all feel.so dragged out and stagnant at times! I always thought Sakura developed 'from' the plot and not 'for" the plot. She'd then be used as a plot device like Sasuke!
He wanted to show the readers that no.matter how bad a guy treats you, you must forget all your self respect and love him unconditionally. If you don't do it, you are a terrible woman

Sakura never understood Sasuke. She had That 'all goody goody' image of him. Even in shoujo I think we get to see that the girl gets through to the MC but here

It was nothing short of devastation
I wonder whether we'd get to see real Naruto amd Sakura anytime soon.....it'd be great to see that dynamic once again. One can wish though...