I'm not going to see it because I already know how it ends.
I knew how "The Passion of the Christ" ended too, but it didn't stop me from wanting to see it. Good film making is it's own reward. I agree with other posters that it is a good idea for some to go see it, especially the young, so they have a good sense of the evil that we are fighting. I fully understand that evil so I am not sure if I will have to see the movie, but just knowing the outcome wouldn't deter me. I've seen some good films many times and enjoy them each time.
Part of seeing this movie is honoring the people that gave so much to save others. To fight back instead of being sheep to the slaughter.
I went to see The Passion of the Christ, and I know how that ends . . .