When things are hard and everything falls apart, it could push a person to the brink of despair.  It gets worse when you're all alone cause it feels like the whole world is caving in on you.  In times like that, it feels good when people come out of the blue to give you a hand.  Not only do they help you through it all, but they make you feel like you're worth something despite losing it all.  When I think of people like that, the song "I'll Be There" by The Jackson Five comes to mind.

Who are these people?  They can be anyone around you.  The quiet kid who gives you a hand with school work?  The awkward office worker who never talks to you then suddenly helps you out with your job.  What these people have in common is the fact that they went out of their way to help others simply because they want to.  People like that restore my faith in humanity.

I guess that's why I go out of my way and do what I can when these people need me.  I'm not perfect but I will do my best to help them.  When ask why, the answer is simply that they were there for me.  I didn't ask for their help but they helped me nevertheless.  They were there for me, so I'm there for them.