good, another thread to get flamed at because I hold a different opinion, these are my favorites.

first of all: my opinion. number 3, if not 2. I also think that Naruto is forming a sort of friendship with Naruto, and I read that famous line from the jiraya training with a different tone of voice. where other people hear kyuubi saying that he'll help because he's being threatened, I hear him saying he'll help because he appreciates Naruto's courage.

now, something with more meat.

it seems very unlikely that the demon dies with the host. if so, Jinchuriki would have been assassinated at a much higher rate (or at least aimed at), a country might not want to kill their own host-dude. but I doubt that they would mind killing the opposition, and tipping the balance of power in their favor.

at the very least, the village (leaf) didn't know what would happen if they killed Naruto, the sealing process was one-of-a-kind. and has never been tried before (as far as we know), only the 4th (and 3rd) knew the details about it, and with them dead, there's no one left who knows for sure. killing Naruto might kill the Kyuubi, or give him freedom again. it's unclear. but as long as it's within Naruto, it doesn't go out.

onwards. the other jinchurikis, they are all fighters, with tons of battles behind them, they are around for around a 100 years (since the 1st hokage?) or more (since the Payne ninja of six paths?), it means that either no Jinchuriki has been killed in battle, or that killing them doesn't kill the demon.

(fun note: every JInchuriki we've seen so far has been defeated, meaning that an akatsuki level ninja, in previous generations, could have beaten a jinchuriki, remember Kazuko the immortal?)

now: a question that can be asked is "If Kyuubi knows he won't die if Naruto dies, why does he help him?"
there are several answers, ranging from Shonen heart explanations, to just sharingan stupid.
one answer is that the Kyuubi has taken a liking to Naruto, and is giving him power because of respect, or boredom and wanting to see others make havoc around.
another answer is that the Kyuubi is taking shelter in Naruto. he's been beaten by Senjou, and then been dominated by Madare. so the kyuubi is afraid to go out, and prefers using his powers indirectly (via Naruto) and hope that together they can kill Madare (and all the mother-fucking-sharingan-cheaters).

and that's how it should end, Naruto killing Sasuke, and releasing the world from the terror that the Uchiha clan have put it in. even unnatural demons like the kyuubi have fallen under the iron boots of the uchiha clan, the hero must set us free from their oppression.

note: I choose to ignore the Juubi thing for now, maybe if we keep silent about it, Kishimonto would forget he ever wrote that.