This is the foundation of my morality.And no, I don't think the world contains any more justice than we humans bring to it. Still, and however imperfectly, that's a lot lot better than nothing.
No man is an island. We need help sometimes. We need comraderery. Different people have different needs, but we all have them. There's clearly no God who cares enough to help, so we must do it for each other!
If we don't do it, it just won't happen.
Tom