Use "profitableness" in a sentence

1. Marriage is encouraged in China, not by the profitableness of children, but by the liberty of destroying them

2. The Christian teaching, and that of the positivists, communists, and all the preachers of a universal brotherhood of men, which is based on the profitableness of such a brotherhood, have nothing in common among themselves, and differ from one another more especially in this, that the Christian teaching has firm, clear foundations in the human soul, while the teaching of the love of humanity is only a theoretical deduction from analogy