What makes them "non-vialble"? Are they not adoptable? Why is it "puritanical", is it not possible for non-Christians to believe your religion of moral relativism is objectively base and repugnant?
Be nice to him; he may have a very good set of adult stem cells that the rest of us need more than him.
Besides, he's a "humanist" so he understands our needs and will go along with this.