Pretty much. For the ones that don't come to reside on Earth there are a lot that come to study it as the rise of a culture or just to see the sights.

[He finally gets up to the desk, and starts unloading things.] Hello, DoubleQ. [A vague greeting as he's lining up some Quadratus fruits he's wanting them to take a look at, then the spawner, and then he steps back to let them run their stuff by.]