“…All good things must come to an end, and that includes our Universe itself. It’s 13 billion years old, but what will happen in a trillion years? A quintillion? That’s a seriously long time from now. By then, all stars will be long dead, and (if modern quantum theory is right, and we’re pretty sure it is) even black holes will have evaporated. Not only that, but matter itself will have fallen apart: protons, long thought to be utterly stable, may disintegrate after about 10 ^39 years. So in that long distant future, the Universe may be nothing more than an ultra-thin soup of electrons and low-energy photons bumping around an eternal nothingness…” Here. (Hey, cheer up, boobie, there may be endless universes–ask Steven Hawkins and friends).
Related (sort of): Ennui hits Chicago police force.