Religious practices keep important truths about God alive. When we encounter a religious practice, it is always insightful to try to figure out what truth it is keeping alive. A religious practice not assigned to a truth about God is a fetish - a superstition.
Rally 'round the Cross!
The Mass is one of the landmarks that God erected to draw our attention to the 1) ultimate revelation about the nature of God, 2) its location and 3) its importance.
Knowledge as Food
Tracing the Route that the Treasure of Christianity Takes from God to Us
The Most Holy Eucharist
Irreparable Damage is Done to Our Understanding of God When we Divorce the Mass from its Foundation
The intransigence of God’s love for us despite the brutality of the Crucifixion is the good news of great joy. However, it does not propagate itself. God gave us the Mass to serve as the vehicle that propagates the good news of great joy from then and there across space and time to us here and now. Propagation of the good news of great joy is the purpose of the Mass. God did not invent the Mass to propagate his real presence. The real presence is not the good news of great joy. His real presence is incidental to the good news of great joy - necessary but not sufficient. God established the institution of the Mass to remind us through his bloody wounds that our God is the God who forgave us for the evil that we did to him. Wow! What a God is our God!
Barely Skimming the Surface of God
The doctrine of the Real, but faceless, Presence of God is true - absolutely, entirely and positively. However, it is not true enough. It barely skims the surface of God. It hits the atmosphere of our understanding of God and bounces off. It is a tangent. It contributes little to our understanding of God.