If in one bazillionth of worlds, right now, you are being tortured even though in every other world you are both alive and well, and you don't care about that world because it's only one in a bazillion, there's no reason to care about that one branch more if all the rest of the branches get changed so that you're dead. The amount you care about it should be independent of the amount you care about all the other branches.

The question "Which branch will I go down?" does not specify different ways-the-world-could-be, depending on whether the answer is yes or no. It's meaningless. There is no unique part of you that goes down only one of the branches. Your brain goes down every branch. There is no ghostly essence that is funneled into the branches where you die slowly. Your brain goes into every branch, and in most of them, it dies at the most probable speed.