The Universe is not only immaculately expansive but it is also immeasurably compressed. When comparing anything to the size of the Universe, you must consider not only the large scale, but also the microscopic scale of space. When it comes to the Universe, you really need to use your imagination.
Now consider that there are at least 10 trillion planetary systems in the known universe. Notice the “at least”. That is 10,000,000,000,000. Earth would be “1” of those. The idea that there is no life on any of those other 9,999,999,999,999 planets is absurd. Let alone that there has been no life in the past and there will be no life in the future!
Add in the possibility of multiple, or even infinite dimensions, which means entire civilizations could exist on a planet like Earth right alongside us without us knowing it, throw in the nature of time and time travel as it interacts with gravitational forces like black holes, and the concept exceeds the human mind’s ability to grasp.