To paraphrase Douglas Adams, the universe is really big.
So big, in fact, that I suspect that interstellar travel by any person or thing containing any semblance of mass is functionally impossible, and there is no indication that any sentient beings have traversed the stars.
But, I also think that every star in our universe has the gravitational pull to form a series of planets around its orbit.
And, life will exist wherever it can exist. Now, life in this sense runs the gamut from single celled organisms all the way to complex sentient beings. But, that’s just quibbling on details - life forms are everywhere they can be (our planet providing a good example of that).
What does this mean? For every star you see, there is a solar system. And for every couple of solar systems, there is a planet with a thriving ecosystem. Some are at the point in their development that they have civilizations, whether archaic or centuries beyond our development.
We aren’t going to ever visit these distant places. They won’t be coming here. We are simply too far away. But our universe is teeming with life.
What’s your opinion?