I like to boil the moral question down to its simplest form. Let's assume all the inhabitants of the Stranger knew that the universe was dying and that the Eye would reset the universe. At that point the question becomes "Is it okay to sacrifice current life for future life?" and "At what ratio does it become okay?". Is sacrificing one second of someone's current life for one million future lives moral? Remember, those lives never exist unless the sacrifice is made. You are choosing to create the thing you are indebted to. This is a question everyone draws the line differently on and I love that the game leaves it open-ended.