True, most of those consider the citizens of Guam more or less our equals, not our inferiors. Do we do the same thing for our closest extant cousins, the chimps? Of course not. We exploit them every chance we get. We enslave them when it serves our purpose, destroy their habitat when it serves our purpose, use them for research when it serves our purpose, and do whatever else we may please with them. What makes you think that a superior life-form would be any different?