Hi RobinHood!
A great question. I have my own theory on that, but I am not aware of research that supports my theory. My theory is that people ignore their intuition because most of modern education is about rational/analytical decision making and we ignore, as information, things that easily described by either numbers or words. So a vast sea of information and feedback from our world is ignored, not because it doesn't exist, but because we have over developed a limited number of ways of describing it.
With smiles,
Jason