For the sake of argument, lets say there are only a billion other universes, they all also have suns that will die, so which do you aim for. Like anything it all has a life cycle, and maybe it just shows, nobody gets out of this alive, including our universe.
You all know I am from our space industry, and a huge advocate of it. You mentioned the modern things we have from our space program, namely the microwave oven. If you actually consider what the microwave has done, a bigger argument against it could be made for the social problems we have caused with it. In the long run, the microwave could be considered one of the biggest killers we have made, topping many military weapons. How it has affected families, from unhealthy eating, to no more family sit down and talk at dinners, or just another instant gratification tool to laziness.