Maybe I missed something?

Rating: 1/10 (10 August 2014)

This film is rated quite highly on here (6.9) and I've read some of the interpretations about it. I can see why people like this film however when I watched it, I just wasn't feeling what everyone else was. Maybe I completely missed something in the film...
This film felt like a complete waste of time. I was confused the entire way through the film (although it seems this is what was intended) and the ending made sense... But the ending was poor, very very poor. I couldn't tell if the main character was dreaming or awake...
Spoilers ahead: 1. The whole thing was a dream. Could there be a worse ending for a film? 2. What does the film really show?