I'm a completist, too, which is why it pains me that I haven't read the rest. But I don't really want to for any other reason than a tiny bit of curiosity and that desire to have read the whole series.

Yeah, but in my experience (of being around other people from ages 11-17 who were interested in Harry Potter), they don't. They just stay on the same level. Which is fine with me, in one sense -- if that's all they want to do -- but... I wish people would read more and enjoy it. Sigh.

(I had a great fondness for the Enid Blyton books, but even then I knew they were stereotypical and completely unrealistic.)