Orphans are natural seekers, outside the norm.
Plus, they make really great stories and examples of aspiration and heroism for the rest of us. Though heroes most often work alone, they serve the Group whether that Group is a family, tribe, city-state, nation, religion, planet and perhaps some day the solar system, dimension, galaxy, etc. if current science fiction proves as prophetic as some mythologies have done. These heroes are not part of the Group in the ordinary sense. Most then take on the mantle of duty and honour and save the day. The unique parentage often includes gods, angels, dead heroes, animals, acts of magic, acts of weather, or otherwise seemingly simple acts like stepping over a stream or a fire.