This is the reason why a quest for other intelligent life in the Universe will fail, at least in the short term for perhaps 100,000 years. Isaac Asimov and other science-fiction authors have written stories of humans seeking intelligent life out there, and failing. The odds are truly against it. Not just life, but intelligent life existing elsewhere (and discoverable) at this mere sliver of time. We're casting fish hooks into rain puddles seeking big fish.