To me fantasy is a tool to express wisdom and life experience with. People laugh at me when I watch cartoons or startrek and they call me a dreamer.
Fact is, tho entps are thought of to be the biggest childs and imbeciles of them all, we seek in our fantasies, in cartoons, in startrek, our life experience, wisdom and the formula for our own happiness. At the end of the day, entps will be the most hardliner pragmatists and realists you have ever met in your life and people will come to seek our guidance, cause they feel we know something they need to know. this is not achieved because we have been the highschools best-liked guy ever, no this is achieved thru dreaming and our fantasy worlds, which enable us to compare, to analyze and to understand how humanity can live together and what consequences certain actions would have.
In that regards, as a tool, fantasy is a method to teach and a place to escape to.