I'm surprised how polarizing this movie seems to be here. I thought it was decent but in many ways it wasn't very good. I didn't find it emotional or thought provoking. The characters were cliched and showed little to no growth. At times it dragged.
Interesting concept which, IMO, saved the film but the execution was certainly flawed. That said, I'm surprised how people found it terrible. It worked OK as a family drama and had several funny moments, especially from Hawke. That bowling alley talk about safe sex was great!
I think in many ways the film is a piece of art, as are many of the critically acclaimed dramatic/noteworthy movies.
And there a lot of people, myself included, that really aren't entertained or able to appreciate said art.
For instance I thought the 12 year concept of watching the brother and sister was cool, but the "real life" aspect of the disjointed plot made for a clunky movie to me that i just wanted to end. Now, to the director's credit, I'm not sure what i would have done differently to make it work.
Either way.. for what it's worth the more critically acclaimed a movie is, the less likely I am to probably enjoy it. My life and my job are already pretty serious as it is... when i goto watch a movie or a TV show I just want to either laugh, or for it to be mindless fun like a Bond movie or a comic book movie.
And I think that's where the dividing line is... and it's a thing for almost any genre of things in life from decor, clothing, food, music, etc, etc.