Why might there be no category for metaphysics on the AskPhilosophers site? Has metaphysics as a subject been disregarded, disproved or abandoned by philosophy? If so or if not, what relevance does it have within contemporary philosophical discussion?
Metaphysics is indeed a central area of philosophy: you will rarely find a philosophy department that doesn't have a course (or many) in metaphysics. We've chosen not to use the name here because it probably doesn't mean anything to someone who doesn't know much about philosophy. If you'll notice, the category names at left are all everyday terms that have some significance even to those who've never encountered philosophy. There are plenty of questions/responses about metaphysics on the site: you'll find them in categories like Color, Existence, Identity, Science, Space, and Time.