Just in case you didn't have enough to worry about, think about this: A random fluctuation of the vacuum of space anywhere in the universe could flip the cosmic light switch to "off."
"Quark Disasters." Delivered at the British Association for the Advancement of Science Annual Festival, Glasgow, Scotland, September 2001
Benjamin Allenach, European Center for
Nuclear Research (CERN)
Think quarks, leptons, and bosons are too small to harm you? Think again. Someday, they and their sister particles could unmake your whole cosmos.