In the case of NaruHina... yes, it did scare me. But even though he could just make "everyone" happy with SS/NH.. that wouldn't make any sense. Because 1) It would be disregarding Naruto's feelings completely. 2) Kishi is perfectly fine with Sakura being the heroine. and 3) Hinata doesn't really serve such a strong purpose to the show.
If NaruSaku happened, it would also make a lot of people happy all the way over in Japan, and it would fit in with the whole hero x heroine thing. If NaruSaku didn't happen, Kishi wouldn't have spent all his time building up Naruto's and Sakura's relationship on both sides, in terms of friendship, as well as romance. He wouldn't have paralleled NaruSaku to MinaKushi that many times either.
There's always the possibility that NaruHina could just randomly happen, but Kishi has a tendency to build up relationships, if they were gonna be significant to the story. Something that NaruHina doesn't have. Something that Toriyama didn't bother doing either.
Naruto and Hinata could very well just be friends, and Sasuke and Sakura could very well just be comrades. It would be very out of character for Sasuke to be romantically loving, and Naruto to be unoblivious to Hinata. If NaruSaku happened it wouldn't be out of character, because Naruto and Sakura already have feelings for each other. Hinata would be happy, and Sasuke wouldn't care. You see?
But that's just how I see it. If Kishi decides to randomly add NH/SS, then well... he's lost it xD
Why do people NOT ship these two? I just don't get it.
Probably cause they hate Sakura. When she's probably the most developed female character in the whole show.
I respect Hinata, but Sakura deserves some too.