@Sushi-
Sorry XD That is a nice plot bunny. And if we're talking about headcanons that justify the ending,
Sasuke poked Sakura's forehead to send a genjutsu Itachi-style showing that he'd destroy the entire shinobi world if Sakura didn't marry him.
Naturally, Sakura doesn't want Sasuke and Naruto to fight, so she consents and tells Naruto to get with Hinata instead of her. Thinking she's preemptively stopping a 6th shinobi war, when in reality it breaks Naruto. Sasuke uses that to his advantage to destroy Naruto's nindo of never giving up and will to fight. It's his own plan to get Naruto out of the way when he starts his 'Revolution.' He also got her pregnant for extra measure of making it look convincing.
(imo it didn't make sense for stubborn Sasuke to simply give up on his version of world peace for the sake of friendship with Naruto.)
Don't take this so seriously either ^^
edit:
@Nostradamus- that sums it up.
Edited by Toby, 05 April 2015 - 05:35 PM.