"Why is there something rather than nothing?"

Now, there's the question I wish Bob Schieffer had asked at last night's debate, but, failing that we have Jim Holt’s "Why Does the World Exist?: An Existential Detective Story," which is based on asking a bunch of philosophers “Why is there something rather than nothing?” As Freeman Dyson summarizes:

He reports their reactions to this question, and embellishes their words with descriptions of their habits and personalities. Their answers give us vivid glimpses of the speakers but do not solve the riddle of existence.

They won't answer the question! This is an outrage.