This is partly because of the anime's own focus on Naruto's crush on Sakura and Hinata's crush on Naruto, but it's also because of the nature of anime fandom.
Updated August 25th, 2020 by Josh Davison: Naruto's romantic decisions are a central part of the anime as well as its successor, Boruto. Here are several reasons why Naruto should've chosen Sakura and just as many reasons why Hinata is the one for him. Fans who stayed until the end know that Naruto eventually married Hinata while Sakura ended up with Sasuke, but it certainly did not go without much debate. Though there were only subtle hints of romance throughout the series, it was always apparent that Naruto had two potential love interests: Sakura and Hinata. In fact, most of the main characters in the spin-off series, Boruto, are the children of characters in Naruto who ended up falling in love. Naruto may be a shonen anime full of action and young ninja who fight for what they believe in, but that doesn't mean the story is completely void of romance.
