"...it will always be very appropriate to follow the noble tradition of having boys serve at the altar."
(Circular Letter to the Presidents of the Episcopal Conferences, March 15, 1994, no. 2).
The Church knows who she is and what is best for her life and mission, as does every organization on earth.
The Church knows that the Eucharistic Presence of her Divine Founder, the God-Man, is necessary for her existence and so, therefore, also are priests who make the Lord truly present in their celebration of the divine Liturgy.
All things given to holy Church which encourage the flourishing of vocations to the priesthood are to be held as primary to, and preferred over, anything which simply expresses the temporal desires of individuals which may or may not be simply a distracting fascination with worldly and superficial fashions or trends.
The Church prefers and lauds the service of men on the altar, evident simply by pointing to her long and immemorial traditions.
For these reasons it is a good and holy thing to uphold, support and actively encourage the reservation of roles of service at the altar to boys and men.