From Miles W Mathis:

As a child, I remember being able to enthrall just about any audience with my observations, but that all ended at about age 12. It wasn't that my stories became less interesting: in fact, I believe they have become more and more interesting as time has passed. What changed is my audience. While children are pure enough to be enthralled by a true story, most adults are not. Most adults don't want to hear anything they haven't already heard on TV. Teenagers are heavily groomed by culture, and they are entertained only by those who can mimic the major entertainers and forms. Although I could do that as a young man, I didn't find it entertaining for myself. Beyond a certain age, I was no longer interested in aping Steve Martin or Robin Williams or whoever was in the news. In short, I grew up. I needed more from my entertainment than a few shallow jokes. I like comedy routines and sports, but only as a sidelight in my downtime. For my main courses, I need to feed on something more substantial. Most adults no longer grow up. They are stuck at the level of comedy routines and sports. They are groomed by long custom to remain at this level. If you get beyond those categories, your audience is lost. They look at you like time traveler from the 19th century. You might as well be wearing a powdered wig and buckles on your shoes. If you say anything interesting, they will ignore it as if it wasn't said.