Here I will post the ten main reasons why Harry Potter and the Half-Blood Prince the movie sucked so badly...

1. Omissions: This reason is most likely already evident in the fact that most fans are furious that the story in the movie versus the story in the book is completely different. They have left out lots of important parts from the development of the plot. For those who don't know what I am talking about, here are some examples to refresh your memory: 1. No introductions of the new Minister of Magic. 2. Neither Dobby nor Kreacher are present in the movie, which play a vital role in the development of the plot. 3. No funeral of Dumbledore, which is one of the most important things that was left out. 4. Many others, too many to list here...
2. Too few characters: The stories of some left out characters was just squeezed into the few characters that were present in the film. For example, where was Bill and the Dudleys.
3. Short movie: The film was nowhere near long enough to fit all the important bit and pieces together of the development in the books. So they changed and omitted many of the important parts.
4. Crap acting: However, the acting have improved since the first movie, it is not near good enough to be enjoyable...
5. Too fast paced: In order to fit the remaining parts of the story, they made everything progress too fast. It felt as if the entire movie was in fast-forward.
6. No epic scenes: The battles was just that, boring, it was so messed up from the book. That the only remaining bits was shot so that most of the fighting is left out and most of the characters. 
7. Doesn't make sense: It doesn't continue where the previously movie stopped and thus left lots of questions unanswered for those who haven't read the book.
8. Voldemort almost not present: The parts of Voldemort are almost completely omitted from the story and the background information needed for why Malfoy is doing what he most do is completely replaced with a feeble attempt to answer it.
9. Not the right characters: There are parts in the movie that you know it must have been character X doing what character Y is doing now. And this changes just makes the fans furious.
10. Completely different story: They added things that didn't exist in the book, like the changes of what characters must do what etc.

As you can see the main problem that I cannot get enough of rambling about is the changes to the story and plot of the movie versus the book.

Tell me what you thought about the movie by leaving a comment.