You are both on to something. Optimists are more likely to survive situations that are survivable given their lack of planning. Pesimists are more likely to s

You are both on to something. Optimists are more likely to survive situations that are survivable given their lack of planning. Pesimists are more likely to survive by planning around crysises and avoiding them. There can be selection bias in both cases, and that's why we still have both.