Human nature is driven by companionship.

It is part of human nature to desire companionship, whether it comes from a mother becoming attached to a child or a person following a leader. Humans desire acceptance and appreciation from others and they find this from a companion who also wants appreciation.

People start to feel compassion for a leader, like Lincoln, when he or she is strong, just, passionate, and agrees with the people's beliefs and ideals.
When people have compassion for a leader, like Washington, they will follow the leader somewhat blindly through the harshest of conditions.
As in this picture, people will fight for and beside companions. This makes companionship appealing because people want to have someone to have their back.
A mother quickly develops strong compassion for her child. this causes the child to develop a equally strong compassion for her.
When two factions of people enter a conflict, as in this piece, it is human nature to identify with the ideals of one faction and in turn, kindle feelings of anger and violence toward the other faction and its beliefs.
People also seek out companionship in the form of a relationship. This can be seen by men bring flowers for women, as in this picture.
People, as in this sketch, are empowered by camaraderie to fight. When you have multiple people fighting on your side, your companions allow you to feel safer and in turn fight better. If one of a person's partners falls in battle, the person will also have improved performance on the battle field due to a state of directional rage.
This shows that people feel safe, at peace, and are more trusting when they are near their companions. This is why people desire and seek out companionship.
Credits: All media
This user gallery has been created by an independent third party and may not always represent the views of the institutions, listed below, who have supplied the content.