A story that doesn't have conflict is not a story. Get your hero up a tree, throw rocks at him, throw bigger rocks at him, then get him down. The basis of all drama is the rocks that we throw. We're interested in the O.J. Simpson trial for the same reasons we watch a Harrison Ford movie. There is great struggle, all kinds of obstacles to overcome and life and death hangs in the balance.
Conflict makes things interesting.
Unlike a book, where a reader can stop and go whenever, films are a forced march through two hours. Setting up your story is major crucial. We are introduced to the main character and find out what the story is going to be about. Script readers are always complaining that so many screenplays start out with five pages of a man shaving or a woman going shopping. It's not uncommon to be standing on line in a grocery store in L.A. and see somebody in front of you shuffling through 3x5 cards.