Why is it almost 3 hours long?

Rating: 3/10 (24 January 2016)

Unlike many others who gave this movie bad reviews for the violence or the excessive use of the "N-word", I don't think that's the problem. After all, it's a Tarantino movie.
My main gripe with the movie is that it is simply too long and boring. I liked it at first. The cinematography, landscape, props and costumes are all really good and sets a great mood. But it just feels like someone is constantly turning a knob to just slow down and stall every single event. Every piece of dialogue feels watered down and dragged out. The cast is solid, but they can't magically turn almost 3 hours of mediocre dialogue into a great movie. There are some funny moments, but not nearly enough to save this movie.
For the first time, I've actually felt disappointed after watching a Tarantino movie, and I honestly think that if any less known director had made the same exact movie, it would not have been called "brilliant" or a "masterpiece".