It's been said in this lengthy thread that there are something like 10 billion trillion planets, or whatever the crazy number is. I saw or read that by sheer chance alone, there must be 10 million (billion?) that are capable of supporting life. I believe it's out there somewhere, whether a microbe or E.T. himself. The fact we haven't had a beer with them is that the universe is just too damn big.
A recent doc on Netflix, I cant think of the guy's name but he's had several, describes it something like this. If these beings HAVE advanced eons and eons further than us, they're on a much more metaphysical plane (i know, it sounds hippie-ish). But by trying to reach that level (meditation etc) we, and they, can transcend those huge distances. He takes people out into the desert, they sit around and meditate and shit starts happening, they film it.
Like someone recently mentioned above, the govt has done a huge about face - from saying no, they don't exist PERIOD for 75 years, to saying ok, we have some questions...and that they'd have to release their knowledge slowly. Reminds me of the book "Childhoods End", where huge spaceships appear over every major city on Earth, and they announce they'll reveal themselves in 50 years. That way, most of the population will have grown up with them in the sky, and many of the others will be dead.
I don't think EVERY incident of UFO sighting is false/fake/man made. I hope I'm alive to see the conclusion.