if aliens exist you have already seen them. Otherwise youd be the first... think about it... imagine amazon started billions of years ago... everything in the universe would work for amazon. but if everything in the universe worked for amazon than you wouldnt notice... so with the grabby aliens theory in mind. you are a resource of them and you need to force their hand enough to reveal how they operate to you in order that you live your life and not the one they want you to live...