Your productivity and health are our constant concern. That would mean your race had been around for thousands of years without ever being discovered. We choose not to be discovered by the broader population. We are a superior race. To interact with lower life forms is not in our interest.
Humans carry diseases, are terribly violent and they stare at each other.
Also, we do not do labor. You are parasites. Go 'harvest' another computer. I'm keeping this one. When she came back from taking pictures that afternoon her front door, which she had locked, was standing open.