What was the point of this movie?

Rating: 5/10 (27 April 2017)

I don't mean what was it's message, that's the most stupid question to ask when discussing a movie, I rather mean why did the director wanted to make this film? Is it something Americans understand? It's a well-made movie, but I just couldn't care about any of the characters so I wasn't interested in how or whether they will survive.