The Church followed the Jewish tradition in creating a temple priesthood under the assumption that such was required in order to mediate the sacraments. Judaism long ago moved from the temple priesthood to a rabbinical model, while the Church has remained fixated on the temple priesthood. If we believe our God will not be present to us sacramentally unless a priest recites certain prayers, we should by all means retain the priesthood. Let's just not call ourselves believers in Christ who promised to be with us wherever two or more gather in his name.