Everybody has their own perspective on ki
Since most people do not teach or talk about it, the subject is usually relegated to the mystical or spiritual category of concepts. They also don't try and use it or play around with the concept in a functional manner. Like God and religion, these things aren't usually discussed, even though they form the basis for our daily activities. We spend our time talking about sports, fashion and the weather. Mundane things that appear to be important.
I know, because I do that all the time.