I am sure highly intelligent life forms and civilizations exist in the cosmos beyond Earth. However I am also sure they are far too distant to engender any hope that we could ever meet them. If such a civilization ever sent a greeting to Earth, by the time we received it the beings that sent it would be gone long long ago, turned to dust. Likewise any signals we send them will not be received until long after we are all gone. The Universe is vast.
I like the screensaver, and I like looking at the numbers.