60 million sperm per milliliter serves the same purpose as countless seeds in a loaf of bread: natural surplus for survival.
It is hard not to be moved by Pope Francis. He is a very good man, doing good work. It is therefore tragic that he cannot see how wrong his understanding of natural redundancy is. There is no difference between a man's sperm and the seeds in a wheat field. They both serve to ensure survival through surplus. Pope Francis could not argue that we should protect all of those seeds as God's special creation. Surplus is the means of interspecies survival. The problem, as with any plague, is that there is nothing to consume our surplus. The Godly thing to do would be to argue strongly that we have a duty to control our numbers in the interests of all nature.