As I said, I will be done too if he kills her. I'll quote myself in regards to this:
Surely, I mean, to each his own. Everyone has its decisions. But for me, there wouldn't be nothing that I could relate this story with.
The most important Arc for me is gone anyway, the most inspiring characters are gone - Jiraya, Itachi, Nagato - (the last one is about to die, meaning Tsunade) soo, yeah, I'm kinda done, heh.
The only reason is him seeing developing Sakura (and Hinata as well, I am also curious about her) in a good way but as we've seen that's not going to happen, I'm going to quit.

Because the end will be like every other story, the main character wins, nothing special.
Is about diversity until the end, and Kishi lacks at this, as we've lately seen...