Joss Whedon said this quote
“ I also felt that Ron and Hermione would have gotten divorced. I'm sorry, I just do. The end of Harry Potter did feel ultimately to me...just the fact everybody had married everybody. The books were so real and so grounded in what things are really like when you're that age, she nailed that so beautifully. And then there was this slightly fantastical ending. I know that was there for her to say, 'Really, I mean it, no more books,' but you do sort of go, people who were in a war are different from people who haven't been, and how does it affect them? But am I going to second-guess my favorite writer? I think not. ”