All this one did was make Thorin look like an even bigger jackass when he acted like a petulant child in Rivendell. At least in the last one we were gifted with the mad, vain hope that Viggo Mortensen would drown.
So, Radagast bragged about his rabbits (stupid), but was ultimately unsuccessful about drawing off the pursuing wargs (stupid), so the dwarves had to be rescued by elves (stupid), and then magically and reluctantly ended up in a hidden passageway to Rivendell (stupid), because Thorin is an improvident, unreasonable asshat (stupid) who has no real desire to learn anything that might help him (stupid). This happened! In a movie! Based on a book you loved! Just to pad it out, because you had already watched two different hobbits check their mail.
The CGI is not that good, New Zealand is not that beautiful, and wargs are not that much fun. And I used to like Thorin for his personality, because he wasn't an absurd infant.