beneficialness

For the eternal and inevitable law in this matter is, that the beneficialness of the inequality depends, first, on the methods by which it was accomplished, and, secondly, on the purposes to which it is applied.

He will hold up to view the nature and extent of the requirements He made of us, their reasonableness and beneficialness we shall all acknowledge. 

Suppose, now, we made the willingness of a parent to give up his or her children the measure of his beneficialness to them.