I have the fullest intentions on seeing it tomorrow. It's bittersweet, really, just like every other fantastic story out there. I'm sad to see it end, but it's a great relief, too. And like every other incredible story, the climax is supposed to be the most, well, climatic and intense.
Slightly off topic: Surprisingly, I've never heard the term Potterhead to refer to Harry Potter fans. I've always heard Potterphile.