Well done for the LoTR and the first two Hobbit's movies but...what happened to you guys in this defining and last Chapter?

Rating: 7/10 (28 December 2014)

As a big fan of Tolkien's world, The Lord of the Rings is my favorite movie of all times, it's by this fantastic trilogy that I came across Tolkien's world, and that all his works were fascinating me for years.
When I read the books and noticed some (if not major) differences between the plots of the Lord of the Rings movies and the book, I was a little disappointed. But I was saying to myself: After all, Peter Jackson did a very nice job with his crew bringing Middle-Earth to life, the cast and the whole team is perfect, and the ideology behind Tolkien's works is preserved, so for me the first trilogy deserves a 10/10. When the making of The Hobbit as a movie was announced, and knowing then that Peter Jackson take back the direction of the trilogy, I was very pleased and I was eagerly waiting for the coming movies.
"An Unexpected Journey" and "The Desolation of Smaug" were well made. Even if they lack a little of the attraction that was felt in the Lord of the Rings trilogy, it was a great work though..after all, we got the chance to discover the dwarfs realm, encounter Thorin Oakenshield's company, visit Dale and Esgaroth, see the elven city of Thranduil, the lay of Sauron with his Nine in Dol Goldur, feel the might of the fearsome dragon Smaug, and lay an eye upon the endless wealthy treasure of Erebor.
The third part of the Hobbit's trilogy was originally named "There and back again", and once it was changed into "The Battle of Five Armies" I was saying to myself that I must be prepared for a surprise. And what a surprise Peter Jackson really makes in his 'final and defining chapter'. The last thing that I was expecting is a CGI movie. Tolkien's works are far beyond that...So much time was invested for the battle when we could see much more interesting things in the last hour of the movie:

Thorin, Kili and Fili Funeral.

Make a descent goodbye between Bilbo and the dwarfs.

Find a way to include Aragorn "in person" in the last moments of the movie.

Even if the last minute of the movie was good, the end could be better if Bilbo didn't jump in 3 or 4 minutes or so from Erebor to the Shire.

Avoid a love story that it never meant to be in place.

Why Azog has to live after Moria's war? The grudge that Bolg has against the dwarfs wasn't enough for a good "climax" for the movie?

To conclude, my question is: 'Why did they invest so much time for one battle?' this part could be better if just a little much effort was made for a reasonable script.
I gave 7/10 just for respect of Tolkien's work, and the effort that was made for the other movies.