It's the only logical pairing implying both of those character for the following reasons
1- Naruto love Sakura since Day 1 and it is another goal he has in the story if you want(beside being Hokage), a boy who have a crush on a girl who love another one and clearly doesn't appreciate him at first. Their relationship along the story evolved from a one sided love , to a friendship, to the point of best friend and now, we have a Sakura who try to think about her feeling from him ( the Confession part). I think she was sincere about her feeling for Naruto but she just told him at the worst timing ever for the wrong reason. Deep down, maybe she still have a little crush for Sasuke ,but to me, it is the thing she had to overcome in the story, letting go that crush.( It's hard to let go of your childhood crush because you feel like you betrayed an image of a person that doesn't even exist)
2- If Kishimoto doesn't make this pairing happen, I really don't get any of the story, I mean with all the hint he left in the story, if narusaku doesn't happen, then both of them must be single at the end(it's the only other option that is logical to me and that will be disappointing because of the obvious hint in the Shippuden part), From when Naruto come back( Sakura blush to even ask out Naruto if she looks attractive:P) to the event of the bridge of Heaven and Earth (From Sakura tears to the Yamato incomplete sentence about Sakura feeling), to the hug who look anything but brotherly, to the team 7 encounter where Sakura stand up for Naruto against Sasuke and where Naruto gives hope to Sakura that team 7 might have a good ending, to finally when he make Naruto's mom told him to choose a girlfriend who isn't a weirdo(part 1 Naruto said that Hinata look kind of weird), but a girl just like a mother( I think the candidate who fit the most to the description is Sakura) Adding the way Kushina fell for Minato, is a parallel of Naruto compliment Sakura's forehead( just hope they have a discussion one day about that.)
3- The 3rd movie of Shippuden and the recent OVA, if anybody doubt Sakura feeling for Naruto , go watch those, I know it's not related to the direct story(I mean the movie here, the OVA I hope so) but you must keep the essence of the character and they were reference about Sakura feeling for Naruto by Sai ( One where Naruto and Sai are hospitalised, not the strongest one but the other when Sakura was about to fight that chimera monster thing, this one is crystal clear)Plus that movie show sign that Sakura knows that Sasuke isn't coming back when she ask Naruto if his hand can reach their lost one this time( Kakashi in the movie, )
4- Other pairing doesn't work. SasuSaku is pretty dead with the two killing attempt on Sakura by Sasuke, plus he tried one time on Kakashi and one time one Naruto( trying to kill people really close to her and herself, I don't think any rational person could love a guy like that.) Sasuke obsessed with vengeance and power and I don't think that he will come back to Sakura and say: I'm sorry, I love you . Redemption for Sasuke is either in death or he'll survive, heal from his hatred for the world but he doesn't come back to the leaf and only the original team 7 know that he is alive somehow. As for NaruHina goes, the development is even weaker then SasuSaku. I mean Hinata watch Naruto and he inspire her, I get that, but she could hold on with him a conversation of more then 3 sentences. She saw what Naruto endure alone and didn't even try to be friend with at school or something. And 3 years later she jumps in action, says I love you and almost get herself killed. OK, that might be kind of harsh, but if this pairing is happening, I think the quality of the story will drop big time. Because it will be like this: «I like a boy , I watch him 3 year, I said to him that I love him, BIG TIME NINJA WAR, and then BANG Naruto say : Why not ?
» I don't think it works like that in life if you want a serious relationship. Then , I think that the Hinata confession thing was to close her character( the shy girl who finally admit her love). I think about it and that confession was to free herself of those feeling because she knows that she was fighting an opponent who was stronger then her, so she will not get an answer from Naruto. That was the last challenge to the Hinata character too overcome, admit her feeling, first one was to stand up in her clan. Finally, I don't think Hinata would be heartbroken to learn that NaruSaku happen. Because after watching Naruto all the time, she must know that he loves Sakura. She will understand and will let him go if she really like him.
5-Part one when Iruka refer Naruto and Sakura as Heaven and Earth( that one is kind of hard to miss and in part 2 we have the Heaven and Earth bridge moment wow:P)
6- They are the 2 character with no bloodline gift( Naruto might have his mother ability for the Kyubi or will inherit his father trademark kunai one day, but it hasn't happen yet) What I mean by that is that they have too work there butt off to get to the level they are now.( Along with Rock Lee and Tenten
,man I hope the Guy Team have more screen time)
7- Naruto loves Sakura( I don't think I need to justify that one:P )
8- Sakura loves Naruto ( 2 and 3 pretty much be summarize by this sentence:P)
9- The chemistry between them. They know each other too well, trust each other and inspire each other. They bring the best and the worst each other ( mostly for Sakura:P Shannaro). Plus they look amazing together and their personality fit together.
Well that's why I think it's the only logical pairing implying Naruto and Sakura. Sorry if it was long