Just like we need food and water, humans need each other. 

A brain study revealed that when placed in an MRI, a patient's reward center lit up when another person sat in the room.

 Neurons fire when we talk to someone, think about someone, and they go haywire when we hold someone's hand. Our brains and bodies are actually programmed to seek each other out and connect.

 So then why do so many people prefer being alone? Why do we often run for the hills when we feel the slightest connection? Why do we feel compelled to fight what we're hardwired to do?

 Maybe it's because when we find someone or something to hold onto, that feeling becomes like air. And we're terrified we're going to lose it. And trust me, you can get pretty good at the alone thing. 

But most things are better when they're shared with someone else.