The "observable" universe is very small. We can take a look at things that are at the "ebd" of the universe, but those happened multiple billion years ago. Earth itself is 2-3 billion years old and life in terms of mammals is is a couple hundred million years old.

So to say, there may be another earth with human-like life. But it's so far away, life isn't here (therefore not observable) and life may already be gone there (but it will take another billion years until we can observe it).