The universe is too big to not have life all over the place.....
If our government were hiding evidence about it they have good reason too....
Humans will never be able to get along with thier own species, what makes people think we'd get along with another one? Anyone who thinks we would all of a sudden join hands and unite in peace and harmony because some alien comes down and says hi is a moron. It would just give people another reason to hate and kill.
If aliens did come and see what was going on here they probably left and told all the other aliens out there to stay away from this place...
"WARNING: This planet contains an extremely violent race that reproduces uncrontrolably, destroys everything it touches, and spends the majority of its time engaging in tribal warefare"
Imagine how the religious jihad freaks would react?
"Those infidels from the sky must be converted or killed"
I'm a firm believer that there are spacefaring civilizations out there but most likely they saw the monsters that inhabit this world and left in a hurry and are probably hoping we never learn how to get off our own planet, and if we do, they won't allow us to expand to far...
Former NASA Astronaut Edgar Mitc said QUOTE
"Our destiny, in my opinion, and we might as well get started with it, is [to] become a part of the planetary community. ... We should be ready to reach out beyond our planet and beyond our solar system to find out what is really going on out there."
"The universe that we live in is much more wondrous, exciting, complex and far-reaching than we were ever able to know up to this point in time."