Some cultures foster a negative outlook towards affection, which allows them to pursue emotionally detached and dispirited behaviors. Eventually, this results in the numbing of kind and loving feelings, so it's easy for them to incline towards cold and callus actions against others. On the other hand, dispassion allows for the keenest thinking when performing technical tasks.
The more developed person, regardless of culture, learns to love and grow spritually while still being able to increase their technical capabilities.