In most area of life where gene pool survival is at stake, your emotion is “smarter” than your rational if, and only if, the goal is to maximize reproductive success. Hell, even religions provide better strategy than rational mind.
Maximizing reproductive success is an important goal because it explains why people behave the way they do. That is, those who are around now are descendants and hence similar to those who maximize reproductive success in the past.
That’s why religious people and emotional people breed more kids. That’s why John Galt doesn’t.