I'd say "no" unless you either

1) really loved the first movie
2) love The Hobbit so much that you really want to see this but not enough to be annoyed by most of the movie not being part of the book or
3) really just want to get out and see a movie.

Incidentally. I really wanted to see how it would play out, and I really wanted to see a movie, so I'm actually okay with having watched a matinee.

i just really, really want to see gratuitous epic CGI dragon.

He's not gratuitously epic! He was epic in the book!

OMG I love how you explained that. XD

Yeah, just from what I've heard of the movie from different sources, I know the two you're talking about XD

I found the first movie a bit dull and suspenseless - the best bits were the little character pieces - so I was going to give this one a pass, but I might go for your reason 3 if I can find a friend to go with. Oh, and for reason 4, which is to see the shiny pretty. I've heard the shiny pretty is good, and I want to see what they do with the Necromancer and Smaug.

I really loved the environments in it. I wasn't impressed by the Necromancer, but Smaug's awesome. And even though the movie departs a lot from the book, Smaug gets lines from the book.

I've always been of the opinion that the Company were all pretty new to D&D, and didn't know how to play effectively, so they all chose to be dwarven fighters and an occasional ranger. And they don't work well as a team. So it's been up to the NPCs Gandalf and even the lowly hireling Bilbo to make the perception rolls and get the party out of hot water when they make a mistake or fail to notice the plot device weapon. And the GM decided that he loved playing Bilbo so much, he gave him the most powerful weapon in the campaign, and the most powerful magic item. the NPCs carry the whole game because the players are just in it for the loot and the XP.

didn't know how to play effectively... And they don't work well as a team

That's why my contention these are LARPers trying something new. They don't know how to exploit the rules, they aren't building their characters to be the awesomest thing in Middle Earth, but boy howdy can they roleplay. In Unexpected Journey you couldn't go 20 minutes without someone getting into some big chunky angst about doubt or leadership or growing as characters or whatever. You couldn't go 15 minutes without someone falling off a cliff though. I'm really glad Peter Jackson has gotten to be better about that this time through.

I kind of like how a lot of people are like "The movie is meh, but god Smaug."

A female friend of mine had me wondering if she was about to put on a "Team Smaug" shirt to start and bash "Team Edward" and "Team Jacob" folks.