Why is it that Naruhina fans seem to hate Sakura so much,and NaruSaku have an issue with hinata?

I didn't even know that actually happened. Because, most of my mga kaibigan are NaruHina shippers..except for my crush; he's the only NaruSaku shipper I know.
But as far as I've always seen, he's never had any issue with Hinata, he agrees she's one of the sweetest girls in the show. And I've never had issues with Sakura (except when I was like 9, bcoz i had a huge crush on Sasuke. lol.).

But I guess, its majorly bcoz of the threats the 2 hold to the other's ship. People usually want to have the boy and girl they like together at the end of the show. I mean, I go on a rampage if Ash ended up with Dawn...

I think the majority of people who hate Sakura don't hate her merely for getting in the way of NaruHina, but because she is still a horrible person. I'll try to summarise it briefly (since last time I attempted to answer this question, Fanpop cut my answer pretty much in half): she hits Naruto all the time for trivial reasons; she's still having trouble deciding whether she would save Naruto or Sasuke's life if she could only choose one, despite everything that's happened; she screwed with Naruto's feelings when she made that fake confession and proved that she didn't really know Naruto at all, despite all they'd been through together, not to mention it was pretty big-headed of her to assume that offering herself to him would make him stop; during her fake confession, she sinabi Naruto used to be a 'loser', which is of course horse-poo (I won't swear, there might be children reading. :P); she cries madami than most other characters, though she has less to cry about; she overreacted insensitively to Gamakichi's arrival.

As for Narusaku fans hating Hinata, some of them probably hate her simply because she gets in the way of Narusaku, but some are under the delusion that she is 'weak'. I don't know why. My only conclusion is that they must be extremely unobservant. :/

I pag-ibig NaruHina❤️❤️❤️ I hate sakura because she didn't reciprocate naruto's feelings for her. She's not even pretty and flat chested. I also hate her because she will intervene on our pag-ibig story of sasuke baby. 😍😍😍😍

I really don't know. :/
I mean it shouldn't even be like this. Hating a character because they 'get in the way' of a ship is a pretty shallow reason enough. I for one don't hate Sakura. I don't see her 'getting in the way' because she's not even interested in the first place! And the whole fake confession thing, I don't think she would've actually gotten together with Naruto because 1) she knows Hinata loves him 2) doesn't pag-ibig him like that 3) STILL loves Sasuke. She was most likely confused at the moment and couldn't think straight. I didn't like that at all, but hey, it happens. And screw those rabid Narusakus who hate on Hinata! She's not weak, just gentle. >.> <. <

I actually have no idea. This principle doesn't apply to me. But it'd have been cool if they got into a catfight!