Yeah, might be better for those that the trauma didn't happen to. But for the victims it can be worse. And the thinking absolutely that they are better off alive by those that were not the victim is just selfish.
Don't get me wrong, i'm glad as hell that there are survivors. I hope to god that they can eventually forget what happened and live full and productive lives. But I'm also a realist. I doubt very seriously that these kids will ever get over what happened here. And I'd be surprised as hell if some suicides did not happen due to it.