It's an idea that been growing on me in the past few months and seems to be confirmed by the fact that most people in this forum who show their age are in their 20's. The stereotypical picture of a philosopher has usually been a gray-haired old man. However, I find that I see very few old people who have any interest in debating the 'big' philosophical questions, such as free will, theory of knowledge, metaphysics, and so forth. Other than my grandfather, who was a philosophy professor at UCLA, I can barely name anyone above forty who's willing to have a friendly, off-hand discussion on philosophical topics. It seems to be a thing for young people. Would your experiences confirm or deny it?