Just now? I've been like that since the Beta ended.
For anyone who played the Beta and has paid close attention to what Bungie has said in Updates and interviews - and not said - I think it's clear that Bungie is immensely pleased with the game they are about to complete. Coming from a studio that is intensely self-critical by nature and has incredibly high standards for gameplay, sound, story telling, innovation and general execution, I'm tremendously excited to see what they've cooked up.
Fanboy goggles aside for a moment, it looks like Bungie took all the lessons they could from the tumultuous development cycles of the first two games. The Beta was incredibly refined; it felt like something from a studio with confidence. They nailed the gameplay, but as I've been saying for a good six months or so, I think it's the feature set that is going to set the game apart. I have a feeling they've created something special, and it's going to surprise even obsessive fans such as myself.
Okay, goggles back on.