A universe that came from nothing in the big bang will disappear into nothing at the big crunch. Its glorious few zillion years of existence not even a memory.
Part of the scientific temperament is this tolerance for holding multiple hypotheses in mind at the same time.
Our nation's immigration policy has been of top concern in recent years, and for good reason. With between eight and twelve million illegal aliens in the United States, it is obviously a problem out of control.