I understand, but I am a pretty combative person, so maybe that's part of it--I like to hear everything the other side has in its rhetorical arsenal, and then my mind goes to work countering each point. So for me to sit in a movie and be repelled by the theme would activate my combative side. I enjoy reading and seeing things which are NOT "on my side" more than I do reading stuff that just says to me "You're so right."
"...sad to say, many prefer to believe what they believe regardless that they have failed to think through their own beliefs with any real concerted effort. Others of us, however, are in the continuous process of refining our thoughts and welcome anyone who can poke holes in our belief system. This second group of us realize that there is a war of ideas going on. And it is only through the constant refining of our beliefs and the constant development of our ability to state those beliefs plainly, that there is there a chance to win this war."