Whatever is out there, is out there. However, there is an aspect to this that seemingly connects directly to us; it is called by some The Cycle of Worlds. Over 5000 years ago some "morons" thought that the information they held had become corrupt because of a global climactic event that had happened. Data shows we were hit by a minor galactic superwave (see book Earth Under Fire: Dr Paul LaViolette) and from that time on everything changed for humanity.
The short story is this: Once upon a time "ET" had told our ancestors that if a global catastrophe happened, they would come. They did not come 5400 years ago, and some people lost it. It was only a minor event hence the reason they didn't come. The idea is that the symbol of life (as I call it) was seen to be wrong, and Egypt and Sumer rewrote their history. The new "male gods" idea slowly spread over the planet; we are where we are today because of this screw-up.