>>15959521All good points. The problem with green & grey aliens is that they are just humans in costumes with weird skins on their ships and weapons. It´s a low effort imagination of how aliens could be. These aliens are barely more advanced than us no matter if they kick human ass in movies. They are just decades ahead. Your version makes more sense with technology evolving in such a manner that we can´t perceive it anymore and that they lose interest in us. We humans don´t go out of our way to communicate with ants or bacteria either. Why should they.