Rather or not Harry is gay, I have to agree with your reason for not reading 6th book. I'm even writing a fanfic where she dies a rather horrible death after everyone finds out that she's really evil.

Oh, and I only got 50 on that quiz. I never read 5th or 6th book and only skimmed through books 1-3. The only one I actually read cover to cover was book 4. (That's what happens when you watch the movies first claiming that you wont read the books because they're too popular.)