I don't know...
I saw so much praise for this movie that maybe it set my expectations very high. I don't dislike this movie, I just don't feel like I was blown away like many of the user reviews suggested.
It is an intimate look at the life of an ordinary man with a simple job. You see the surface, and also some of the inner layers of what makes a person.
However, it does not dig very deep into what really would tick this guy off. You get to see what things he finds touching. He takes his time to enjoy nature. He finds beauty in simple things, he takes photos to capture moments. Obviously he loves music. But beyond slightly being annoyed by his younger coworker, we don't see what lives deep within this man. I felt like there was more to discover about him and we did not. maybe that's the point.