Why, you ask? Three reasons.
One, the first chase scene was so loud, I could feel the vibrations in my chest. Not a good thing.
Two, it was hard understanding what some of the characters were saying. They speak English, I speak English, but I could not understand them sometimes for the life of me. What's the saying? "Two nations divided by a common language," or something like that. I want subtitles!
Three, the plot's a little confusing (a few more villains than I like), so I'd have to watch it at least once more to fully understand what's going on.
Onto the Good, the Bad, and the Ugly.
Daniel Craig as Bond. He's a rookie super-agent here, not as suave or sophisticated as Sean and Co., but still very good. And not bad to look at either. ;-)
Eva Green as Vesper. She really makes you feel for the character, especially during the shower scene.
The animated credit sequence and theme song are worth the ticket price, IMHO.
Despite the loudness, the first chase scene is amazing. The bombmaker Bond's after moves like a gazelle. Bond, unfortunately, is not as graceful.
The Bond Love Curse (see On Her Majesty's Secret Service) is in full effect here.
Not much in the way of innuendo or gadgets (except his second car), which means no Moneypenny and no Q.
The torture scene. When Bond is stripped, I'd suggest everyone with weak stomachs go for a bathroom break (this is the longest Bond movie yet, so you'll probably need one).
In keeping with tradition, the main villain is physically marred.
All things considered, I'd say this movie's definitely worth the matinee price, but maybe not the regular price unless you're a die-hard Bond fan.