Ok this just hit me. Naruto wants to end, hatred. Theres a cycle of hatred between the uchiha and uzumaki. In the manga they've been talking a lot about having to endure to achieve there goals.
Now the theory: Naruto has a death match with sasuke even though he doesnt want to, and one of them dies in the process, possibly naruto. So naruto has to ENDURE death or KILLING his best friend, thus ending the cycle of hate.
Kind of a crap theory but i give no f*cks, its as good as it gets