T-like skills are probably valued because they can be useful for order, but a need for order is ultimately ruled by emotion.
Things are so ruled by emotion that the one thing which accomplishes nothing - apathy - stands out as being exceptional. Even the most die hard thinker can't really be entirely apathetic about it, otherwise they wouldn't bother in the first place.
I'd daresay that the ones who do the hardest thinking are highly invested in strict emotions.
I started a thread someplace asking whether or not the rise of emotional intelligence theories would ultimately benefit F types.