J.K. Rowling revealed that she has second thoughts about her final pairing of Hermione-Ron and Harry-Ginny: she thinks that the brilliant girl and the hero should have been matched up. ( Story, some commentary.) 

I’m inclined as to disagree with Ms. Rowling.  As other commenters have noted, Harry-Hermione is a trite pairing and one that leaves Ron as a superfluous character.  Moreover, Harry and Hermione both got to marry into a wizarding family – and a full, happy, functional family at that. ( Hermione’s parents are dentists; Harry is an orphan.  Neither have wizard parents to guide them in their lives, but they got wizard in-laws.) 

The main reason that I’m pro-Ron/Hermione is that Hermione is smart enough for two people.  She doesn’t need a super-high-achieving man to underscore how smart she is any more than Times Square needs a street lamp to light it up at night. ( That said, the suggestion of Neville Longbottom, official BAMF of the series, is intriguing.) 

The sorting hat knew this: it put super-smart Hermione in Gryffindor, not Ravenclaw, showing us from the beginning that there’s more to her than being good at school.  Bravery and courage matter quite a bit to her; she’s not a not-evil version of a social climbing Slytherin.  So, Ron.