Last night, I had a dream where I existed in a universe on the verge of heat death. In fact, I was living in the last light of the very last star... It was both depressing and fascinating to know that when this last star went out, the universe would be completely dark forever. No new stars would form ever again, and the universe would continue to expand and cool down until nothing remained but an infinitely diffuse sea of lonely photons. In the last light of this last star, I was desperately trying to build a Lego castle so that the dark universe would have at least some organized structures. But before I could finish the castle, the last star went out and it became pitch black. And then, in the utter, eternal darkness, I accidentally knocked down one of the towers of the castle. I woke up when I had started to consider ways to end my existence now that I had completed (and botched) my final purpose.