I am not weirdly enthusiastic about Ginny; or anyone else, for that matter. JKR herself explained why Ginny was the best for Harry: here's the interview. And here's the relevant section from it:

... because the plan was, which I really hope I fulfilled, is that the reader, like Harry, would gradually discover Ginny as pretty much the ideal girl for Harry. She's tough, not in an unpleasant way, but she's gutsy. He needs to be with someone who can stand the demands of being with Harry Potter, because he's a scary boyfriend in a lot of ways. He's a marked man. I think she's funny, and I think that she's very warm and compassionate. These are all things that Harry requires in his ideal woman ... And I feel that Ginny and Harry, in this book, they are total equals. They are worthy of each other. They've both gone through a big emotional journey, and they've really got over a lot of delusions, to use your word, together.

I actually liked the "rabid fangirl" bits. Whatever was shown in the films anyway, I haven't read the books.

I found Luna a bit, umm... lunatic.