Some people feel that their main point in life is to do what they love. (Career, hobby, etc) Other's are still here and happy because of a person that they love. For some, it's the person they love that is the reason they want to be alive. You can't have life without love, because with no love means no happiness and no will to live. Even the people who are genuinely struggling and want to die still have something blocking them from causing any harm. Think about it, love is the main purpose. It's behind almost every story. In the Hunger Games, Katniss risked her life and purpose for her little sister Prim. I think love is the main purpose for the reason that humans are still on this earth today. "Where there is love, there is life," is 100% accurate, and learned from observing or experience.
