He can be programmed to do what we want
While Prometheus wasn’t the Alien prequel we were hoping for, critics were unanimous in their claim that Fassbender’s David stole the show. Acting as an android butler who runs the ship while the crew are in stasis, David initially views the mission from a robot’s perspective, but later begins to develop human emotions towards his co-workers e.g. jealousy and envy. In one respect he’s really not that different to a Furby except that he’s creepy, wonderful, blonde and relevant.