You can quote all the statistics you like about the number of suitable stars etc, but until some form of even the most primitive life is found elsewhere or intelligent signals are received from afar, there is no evidence that any intelligent life exists anywhere else in this Universe.
The existence of life implies the existence of the basic chemicals of life.
However, the existence of the basic chemicals of life does not imply the existence of life.
We may, quite simply, be unique.
Regards, Rob