Did you ever consider that MAYBE, just maybe, the reason WHY the Aliens from the Near Planets leave us unmolested is because they ALREADY HAVE what they wanted from us?
They have possibly looted the planet of everything they ever wanted LONG ago, starting with WHATEVER lies within the earth at THE GRAND CANYON and other, very, very similar CANYONS or CRATERS all over the world....
The Grand Canyon, I propose, is a VAST Alien Strip Mine, complete with living quarters for the workers.
MUCH of The Grand Canyon has been declared OFF LIMITS by various branches the American Government...
And INCREDIBLE artifacts have been found there, in caves...
TOOLS and MUMMIES of beings that were NINE FEET TALL!
HUGE bowls and eating implements, folks...
Don't believe me?
Just look into it....
I wrote something, 3 or 4 articles, last year around this time....
But, getting back to my point, The Grand Canyon looks EXACTLY like any strip mine on Earth, Mars or The Moon.....