"Schindler's List shouldn't have ended the way it should have. It's so sappy!"
Okay. We live in a world rampant with people who would deny the Holocaust. In including the actual people in the film, Spielberg is, essentially, flipping these idiots the middle finger. He's saying, "This really happened." The fact that the past three hours were indeed based on truth and things the survivors went through only makes the (amazing, BTW) movie more potent.