Our most basic common link is that we all inhabit this planet. We all breathe the same air. We all cherish our children's future. And we are all mortal.
It is not someone's fault if they succeeded, it is someone's fault if they failed.
I used to think religion was just more of the same thing. Dump responsibility on the big guy. Now I see an importance in that. It's a relief to accept that not everything is under your control.

