I don't think most people are asking all there questions to be answered just the ones where they feel they are lacking or feel that this is a good place for those kind of questions because of the amount of experts (I wouldn't expect people asking me astronomy questions). Remember wiki and self study can lead to gross misconceptions but with a back and forth those can be solved.

Some questions may seem inane to you but that is because you have knowledge of these concepts. People ask me questions in my field that I find inane sometimes but I know that they don't find it inane. I try to explain to the best of my ability and they can comment or ask more questions, this forum is a wonderful place where you can ask questions that lead from the answers. Asking a question to clarify something that you are not sure about but could lead to more questions is good.