"Vaccha, the position that 'the cosmos is eternal' is a thicket of views, a wilderness of views, a contortion of views, a writhing of views, a fetter of views. It is accompanied by suffering, distress, despair, & fever, and it does not lead to disenchantment, dispassion, cessation; to calm, direct knowledge, full Awakening, Unbinding.
Anyone (Buddhist or not) thinking along these lines is left in limbo by Buddha. He's not saying that things exist, but he's also not saying they don't. This is a highly uncomfortable state of affairs but to judge Buddha's response in this context is to completely misunderstand the reply he gave - more of which later. Not answering the question to the satisfaction of logicians didn't make it go away and Buddhists in certain places and at certain times must have faced derision for their lack of "views". An inadequate response to a developing and increasingly sophisticated theistic Hinduism.