The Earth used to be a really nice quiet place to visit, but it has really gone down hill.
I am convinced that female anatomy is designed for easy genetic manipulation, I once was talking to a Gynecologist, who said that there just isn't any explanation for why the fallopian tubes open to the body cavity as they do (except for maybe releasing a syphon lock). The entire structure makes it easy to artificially implant modified eggs. I have wondered if one of the basic reasons for the "Battle Of The Sexes", is that females are the original inhabitants, or have the most remaining DNA from the original genetic stocks, and the males of our species are the newer lines created by visitors. It certainly true that the male lines frequently came from war and invasion, when women were taken as chattel.
Then again, all conspiracies aside, humans are a talkative bunch, except for alcoholic societies, where the "no-talk rule" reigns supreme (according to John Bradshaw). I can't imagine humans keeping a secret of such magnitude for so long, the alien visitation secret. I do think that some myth has to do with visitation, and it becomes cloaked in ignorance, and turns into story that can be carried down in oral traditions. Some of the Greek Myths are so elegant, the one that really impresses me as a clear tale of some sort, is the myth of Prometheus, where he is chained to a rock, and tortured for bringing fire to man. What a world this would be, if we had stayed in the garden areas of this world, and lived as vegetarians, it would have been a different world entirely.
There were two studies recently discussed of events that both happened ~2.5 million years ago. One was the loss of a second sugar molecule that all other mammalian species have, and the decrease in the wean time of humans from 5 years to 2 years, due to the onset of hunting for food, (it was supposed). Two very big things happened roughly at the same time, and they must be linked. At some point right there a genetic change happened in our species that differentiated us completely from every other mammal species, even our " closest relatives", or the "common ancestor". Those kinds of fundamental changes would be the type that would indicate a possible genetic manipulation in our past. Of course the other story that intrigues me comes from the human genome project that states that within the last 50,000 years, our species consisted of 2,500 individuals only. Now there is room on any good sized ark, for 2,500 individuals. This event is where one could interject that a flood, or disaster of some sort, did happen, and there was an intervention, if not a horrific intervention, where the disaster was caused, to save only certain of our common ancestors.
Navajos from Utah, traveled to Mongolia, to discuss common myth, and I must say, that the Navajos from Utah, look a lot like the Mongolian People. They both share a common myth of having been picked up by something described as a red star, and being flown to the places that they currently inhabit.
Any life form that was CHON based, that has the means to get around, would stop by here, if they were appropriately sized to enjoy our gravity, and a breath of air, if it were the type they like, why not? I maintain that Earth was a pristine wilderness that we were once a part of, but for some reason we have become very "alienated" from our natural roots. Maybe it is that we have become truly "alienated", and that is why the place is such a mess. What if we have just become a large, commercial space port, but don't know it yet? Maybe it was just a long term project, that someone signed on for in exchange for technology? Ask the God Rama, monkey men make great slaves.
If only we had more arms, if I had four, then I cold type and eat at the same time, and I wouldn't need as many work breaks.
If there were an engineering project to design the most perfect slave robot, for all around use, what would it be? I think that it is us, actually. The fuel is grown by natural processes, and enough fuel can be grown on a planetary surface to fund enormous constructions, space port building, centers of commerce, and these flesh robots can self replicate, and have huge computational ability, and can create machines to enhance these computational skills...They have control logic centers with interface surfaces that link to all energies at large, in such a way that they are not consciously aware of it for the most part, and therefore can be easily remote controlled, in large groups, for long term projects. When their usefulness is finished, then they can be recycled. They are given a long enough life span to be useful, but not long enough to figure out their ultimate use.
Why not visit here? Well again, it used to be much more elegant and beautiful, but a planet has to work to earn its keep, eh?