I’ve become increasingly skeptical of appeals to “rationality”... the idea works when you’re approaching reasoning as a formal system with clear inputs that everyone agrees on, but that doesn’t apply to most of the decisions we make on a daily basis.

What’s “best” is going to be determined by the specific nature of your values. Rationality, in my opinion, is value-relative, and therefore it makes little sense to speak of rationality as an objective property of a decision. For toy examples where all of the variables are agreed upon, sure, but not much else.