Its Sakura's fault Madara has two working Rinnegan and a Third Eye and the World is facing its End. Because when it really mattered She could not stab an eye.
THIS!
I used to be a Sakura fanboy. I liked that she had some semblance to a strong female character. She had so many opportunities to shine, but, let's be honest here: she has proven, time and time again, over countless tasks, that she has absolutely no impact and might as well not even be in the middle of a situation (or any altercation, for that matter) to begin with.
Yes, she charged into Madara without being totally apprehensive about it, but what good did it really do? It showcased Sasuke's lack of care towards Sakura, but we all knew that. Whether she charged in or not, it didn't change the fact that both Naruto and Sasuke were going to thwart Madara's initiation and attacks. If she really wanted to do well, impress "Sasuke-kun", and impress the readers, she'd have crushed the eye to prevent the predicament they're now currently in.
It's sickening how Kishi represents the only "on-par" female character.