You excuse the Church’s lack of interest in these matters by saying that she exists to save souls.

The Catholic Answers

The Church does exist to save souls, even as Christ died for that purpose. But she does not lack interest in the social well-being of mankind. Moral law rules even man’s social conduct, and since moral injustice can and does occur in the behavior of men towards each other in their social relations, it is the duty of the Church to give us correct moral principles covering such conduct. In addition to this, the Church makes very much of the corporal works of mercy, and the duty of Christians to benefit their neighbors even in the purely temporal order.

Radio Replies Volume 1 by Rev. Dr. Leslie Rumble MSC and Rev. Charles Mortimer Carty