Actually, that's false.
Most people hate her because she's simply stupid. A girl liking a bad boy is one thing, but a girl liking a boy that tried to kill her 2 times?
No. Just no.
I admit, when I was younger, and watching the anime, where everyone was kids, I hated her BECAUSE I couldn't face the fact that nice guys finish last.
But now, this is a whole new level.
1. "Fodder" is something I would never say to anyone, because each character in the whole serie has a role to fulfill. Calling fodder to someone who doesn't fight in the frontlines is stuborn... there are other kind of ninjas out there (well, there are people which worlds are too small so they can't understand this simple statement).
2. "Upgrade for the Sake of plot" is something that even I can't justify as an excuse to hate her, because this serie is not focused on a secondary character (yes, even if the series is called Naruto, it's pretty obvious that being her some kind of "main" character is just a falacy, because the manga isn't focused on her or any other of the Konoha 11 dudes). As I said, this serie is called "Naruto", not Sakura.
3. "Abusive"... dude, if it weren't for Sakura, Naruto would be an epic serious hero, but the main escense of their relationship in part 1 is there thanks to Sakura... "Naruto no bakka! >_>". Even I can tell Naruto isn't reacting to her as he used to do in part 1, so she must do the dirty job for the sake of their relationship as team members.
4. "Annoying personality"... as the personalities of every main characters in this manga, specially the bipolar Sasuke.
5. "Cries when put in a serious situation"... I could agree on this one, but she didn't last time when she put the fake smile to Sai... she was able to overcome this discease.
6. Hinata defended one person, Naruto. Sakura managed the entire Konoha's Hospital and even healed Hinata. I won't defend pairing, that's silly. I'll defend the Will of Fire... Both of them protected someone, and both jobs were hard as hell.
7. Yeah, until now. People can't prove anything as they knew the future, that's arrogance. If the manga ends and Sakura doesn't show anything that Tsunade doesn't know, I'll give the reason to this point.
8. Excuse me? Where? Just because Sasuke appeared first to save her against the Juubi? She didn't even blush for the sake of Rikudou... that's injustified hatred that makes people see things that aren't even there...
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Summing it all and giving away 7, that's 1/8. Sorry, but I have to say that these arguments were as void as Juubi's ass.