If the decision theory isn't complicated, the reason to run a spell "that can only deliver bad news" as early as possible is to save yourself an insane amount of effort running other searches that can only deliver negative answers.
What is true is already so. Owning up to it doesn't make it worse. Not thinking about it doesn't make it go away. And because it is true, it is what is there to be interacted-with. People can stand what is true, because they are already enduring it.