Lifeboat

I dont know if its been mentioned before, I might have read it somewhere, but I find a certain nihilistic thrill in the idea that we are on a simulate lifeboat after the end of the universe, a la the last question where humanity merges itself is with a hyper intelligent computer that exists mostly in a higher dimension in order to some step the heat death of the universe. What if we, a simulation what what was, are all that exists. Just a screen flickering in the dark, playing movies for ourselves.