How come there are hundreds of unanswered questions in certain topics?

Certain topics attract lots of questions that are difficult to answer. For example, lots of people ask very specialized car repair questions that only a mechanic or do-it-yourselfer with experience on their particular make and model of car can answer. On the side, love and relationship questions get answered very quickly because lots of people have opinions on these types of questions. It's important to understand that WikiAnswers is not a question answering service. We don't employ experts to answer your questions. We just provide a forum for users to exchange information. Regular visitors, like you, ask and answer all the questions.