Have we tried to make contact with Ants?
Have we somewhere not opened up "'safe" Natural Parks for animals to live with almost no human contact. Humans go there rarely, pick few animals up, tag them or collect samples and go away with animal still being drugged. And reason being so that we dont disturb their what ever "culture" or animal behavior.
The difference between us and Chimps as DNA is 1%. What if the aliens are like 2% ahead in that DNA. Not even more. The difference then would HUGE between us n them. What ever biggggggest achievement we think we have done, must be their baby's daily work.
If difference is 2% then logically wont they want Earth to be that "'safe" preserve to preserve our culture or "earthly" behavior. just once in a while, drop in, drug us, take some samples, and move on. Would animals at night talk about "alien abduction" and show marks to each other, marks which no tool of Animal World can make. And show some material which is like around their ankles(tags) as "alien abduction" proof. And is made of material which is unknown to them?
Is it just our ego we think we are way superior we have consciousness. But eventually difference is 1%. For a 2% different creature we are just insignificant Anthill in someones lab in someones back ground.
Sad thought, but might be true.