Because nothing reasonable comes to mind to describe your inanities. Would you please explain why Jesus said that phrase about "Peter" and "rock" in Matthew 16:18?
Perhaps you should rely on the teaching of the Catholic Church.
CATECHISM OF THE CATHOLIC CHURCH
424 Moved by the grace of the Holy Spirit and drawn by the Father, we believe in Jesus and confess: 'You are the Christ, the Son of the living God. On the rock of this faith confessed by St. Peter, Christ built his Church.
It was Peters' faith, not Peter himself upon which Jesus built His Church.