Every human being needs companionship or love for survival. One reason companionship is important is because without it, you wouldn't know who the "real" you is. You need other people to shape you and become who you are. Everyone is unique in their own way and you wouldn't be able to feel that uniqueness if there weren't other people around you.

Another reason is loneliness and depression. People need love and companionship with other people to give birth to other children. Our pets would die from the depression of not feeling loved from their owners. Eventually the world would have its own ending of any life.

Lastly, companionship is needed for help and support. It will help with your self confidence and your confidence in others. Without any type of companionship the world would be a very boring place.