You've already decided to do an EPQ, so it might seem a little odd to start this resource by asking you to consider why you want to do a piece of research.
People do an EPQ for all sorts of reasons. It might be because you have a personal interest in a topic that you want to take a bit further. It might be that you want to develop skills that you will use if you move on to university or higher education, such as independent study, research literacy, communication, self-management and motivation. It might be for the very real pleasure of finding things out, of asking a question no one has asked before and in finding answers that no one has found.
Clarifying why you want to do a research project will help you create a strong question that works for you and enables you to achieve your goals.