I don't particularly view it as empty, I just think it lies outside the framework of practicality. It's like asking about the nature of hobbits. (Actually, th

I don't particularly view it as empty, I just think it lies outside the framework of practicality. It's like asking about the nature of hobbits. (Actually, this does have practical provenance in certain circles, but let's try to overlook that for a bit.) Hobbit qualities can be essentially whatever we want them to be, so their precise nature only matters insofar as they reflect our desires. We desire to hold true to Tolkien's vision, so we accept his details as truth and might extrapolate a bit here and there. That doesn't mean the question has any bearing on reality. Similarly, I could ask, why isn't there a force that could destroy our reality retroactively, eating through space and time a la the Nothing of the Never-Ending Story? And the answer is more or less, if it happened, we would know (or rather, not know anymore) by now. The question assumes that there could be such a thing. I suppose I view "Why doesn't the universe not exist?" in the same light.