Well, that message is very clear in the film. However, what I found most disturbing was the fact that there was a place in that town (the old Indian cemetery) that could bring the dead back to life. My God, who wouldn't want to do that? That's why the protagonist (the father), even though he knows that everything will go wrong, tries it anyway in the hope that everything will turn out differently. Believe me, there are many who would try it. And to top it off: knowing that everything went wrong with the child, he tries again with his wife because for us humans, hope is the last thing to die.