"Suppose that the children have grown into youth And have turned out good, still, if God so wills it, Death will away with your children's bodies, And carry them off into Hades. What is our profit, then, that for the sake of Children the gods should pile up on mortals After all else This most terrible grief of all?"

I try not to think about it too much.

(Personal opinion: fairness is a human construct. The universe does not care. We are the ones who make it as fair as we can.)