How important is it that your games reflect reality? Examples include making coins in a D&D game more closely reflect the size and weight of real medieval money, limiting the number of predators in an area to a realistic number, or not having sound in space. Are there some specific "realistic" elements that make the game more fun, but other things that always disrupt the story? Or maybe you don't care at all?
My friends and I have been debating this, and I'd love to hear what everyone else thinks.