Those aren't habits. They are lookup tables. We do everything we can to avoid burning calories by thinking really hard. Reflexes, instincts, habits, customs, traditions, ideologies.. all lookup tables.

It makes sense, the only thing that matters is right action. We can't reason our way to a right action in every instances of every day. We'd be paralyzed, so an endless series of chaches it is. It is only when we get a complete cache miss that we spend the energy to think.