As an advocate of balance, I maintain that we should all strive to hone our minds into a dual brained state. A polarized mind, makes for a polarized person. A balanced mind, makes for a balanced person.
Is This Balance More Desirable Than The Polarized Options?

This question makes maintaining objectivity especially difficult; if not impossible for this writer. Since personally, I have tested consistently as D-dominant, this, no doubt, influences my perspective in favor of seeing "hemispherical balance" as a positive and therefore desirable mind set. Just the same, a simple illustration can reveal a major issue in favor of this stand.
Imagine a large ball on display in a special showroom. The left half of this ball is blue, and the right half of it is red. The ball has been aligned with the blue half facing due west, while the red half faces east. Although, I know, it's beginning to sound like one, this is not one of those word math quizzes.
Now imagine yourself standing south of this "Big Blue Red Ball" looking north directly at it. To your left you see the blue half, and to your right you see the red half. Then you notice far to the left of the ball a man facing east looking directly at only the blue side.
Meanwhile, over to the right of the ball there stands a woman able to see only the red side.
You hear the man say, "I don't see the logic of having that big blue sphere in here?"
Then the woman remarks, "Oh my, what a huge red ball that is!"
Find The Wider Perspective From The Middle
While these extremists, either all the way to the left, or the right, limit their fields of vision, in the middle you grasp a wider perspective. From the middle and unique perspective, the ball is seen more fully and known to actually be both blue and red, not just one or the other. Due to this wider perspective from the middle, it becomes a more desirable place from which to both view and even experience life. This is why "hemispherical balance" is such an important concept.
When we polarize ourselves to either the left or the right, we consequently impose limits upon our very perceptions. As a result we fail to see all that life has to offer. With dual minds, we successfully widen our perspectives and find that most desirable balance, which can only serve to positively enhance our lives. So, if you find yourself looking at life through the filter of logic only, or if you just depend on intuition without logic, you need to stretch your mind toward balance.
Exercise the tendency you now neglect; expose yourself to a wider perspective from the middle. Strive toward hemispherical balance, and your life will be enriched. You'll find greater rationality and joy in your life, as a result.