It's a love/hate relationship... H/D - if you don't like it, don't come in!
I don't think H/D will EVER happen in the books, basically because it is intended for children, and parents would come up in arms about it. ((not that I think they should, if I ever have children I want them to be fully aware that boys can have boyfriends and girls can have girlfriends if they want to)).
In fanfiction I LOVE H/D, the only one I like better is R/D ((which I will start a thread for if anyone's with me! 😄))