There are things that I like about them, but overall I can't say they're movies I want to rewatch all the time.
The Desolation of Smaug
I like the Desolation of Smaug best, I feel like it's the best paced Hobbit movie, and the finale is a lot of fun. There are a lot of over-the-top sequences, but most of them move along well, and are fun to watch (the spiders, the barrels). I don't really care for the Laketown battle with the Orks, and the love triangle was silly (I didn't really mind the new elf character, but the romance with Kili just felt cliche and dumb.) Legolas should have just been a cameo, this should have been his only scene:
https://youtu.be/k_sVsU0m0IQ?t=71
The Unexpected Journey
The Unexpected Journey is good in some places (mainly in the Shire), but extremely bloated overall. The Radagast character was unnecessary, and the movie is filled with way too many dumb creatures. Granted most of them were in the book, but the movie turned them into goofy-acting cartoons (the Goblin King especially should have been menacing and cool). The entire Goblin town scene goes on way too long, and is immediately followed up by another overly long battle. Also, I hate the addition of Azog, it was so unnecessary. I actually predicted this character before the movie came out, because I figured Hollywood wouldn't be able to make an action movie without a main villain.
The Battle of the Five Armies
The Battle of the Five Armies is my least favorite. It seems to have no real structure, story, or pacing, it's just one long battle sequence (it's not even a creative or visually impressive battle). Bilbo is barely in the movie, and everything looks brown and bland because of the color filter. Also, there were some seriously dumb moments in this movie. The scene where Gandalf's staff runs out of battery comes to mind (this may have been in the extended edition). The first two films had dumb moments, but at least they seemed like they were trying to be somewhat dignified, this one seemed like Peter Jackson might have been trolling the audience a little bit (either that or just running wild). I like the opening and closing scenes, but that's about it.
I'm really, really hoping for a remake at some point with a different director and possibly a different studio overall. Just keep it as a single movie and stick closer to the book. Focus less on action and more on making it a children's fairy-tale adventure film. The animated version is still the best adaption, I'd also recommend checking out the video-game.