I think it’s important to be a man of virtue and distinction, and I think that in this vein the beard works as an excellent sacramental that sets us apart as men who desire these virtues. A sign of our masculinity in the world. I think a man can pursue these graces and virtues without a beard, but I don’t know why you would.
While I am not Roman Catholic, as an Anglican I am part of the Church Catholic; and while I know many fine, earnest, and dedicated Christian men who do not sport beards, as a bearded man myself, I cannot fail to doff my hat to this sentiment!
Apparently the view was shared by no less an authority than the great saint and doctor of the Church, St. Augustine of Hippo: