What exactly director wants to convey audience ?

Rating: 5/10 (10 May 2020)

I am very very disappointed with "There will be blood" , i initially gone by the powerful title, expected some high intense drama. But, it doesn't justify the title.
I usually rate movies how they connect the audience. I feel a movie should make audience connect to it, stick to it, should not allow him to think of any other things. But watching this movie is boring for me.
Have watched this movie twice, still did not connect to it, what exactly director wants to tell the audience ? there's no emotional connect in the movie. direction/music/cinematography are top level. but there's no emotional connect, without that it feels boring. The lead character Danie day lewis is awesome.