Two decades of research on counterfactual thinking exposes an oddity: thoughts about the past that make us feel better are relatively rare, while thoughts that make us feel worse are exceedingly common. Are we all self-sabotaging masochists? No—or at least not all of us. Instead, we are organisms programmed for survival. At Least counterfactuals preserve our feelings in the moment, but they rarely enhance our decisions or performance in the future.