An interesting thought, I think, is that maybe what "aliens" are interested from humans is not anything material. Perhaps a rare energy in certain form produced by humans could be a reason for interest. Humans produce a seemingly unique thing that cannot be tangibly felt or held in matter. But it can resonate outward.  This energy is positive and negative energy produced by the human brain. Think of the hive mind of humanity during war, or true selfless love or caring.  Love and joy for positive. War and hate for negative. When all of humankind's global consciousness is focused on an event that has to register as a phenomenon in and of itself. The energy that is produced on a grand scale by human consciousness. This energy has only grown over time as the world has become more interconnected. If there were entities that could somehow harness that...what a rare and powerful thing. Especially if these things resonate differently in other dimensions. What could be like the sun giving off life giving energy here that energy could manifest differently on other planes of existence.  ....or this could just be the bong rip I took talking. 😉