Assuming we are unique has a trend if being wrong.

We are not in a system where the sun rotates around the Earth and the stars set on crystal shells around us.

We are not the centre of the universe, Or galaxy, or solar system. Our sun is an ordinary main sequence star.

Everytime we find out that we aren't that unique.

So I would be wary to state we are the only universe as probably will go the same way as heliocentrism.