Jesus said, “Just as the living Father sent me, and I live because of the Father, so whoever eats me will live because of me.” [John 6:57]
What is your purpose on Earth? Why is there life here, but not elsewhere? From where does life, your life, the life of a blade of grass or of a corn stalk come? Why do we eat of life that we may live on Earth? And when we die, because we only ate life which came from Earth, shall we also return to the Earth to be re-formed into a blade of grass or a stalk of corn?
Catholics believe, no, that we shall not return to the Earth, but that because we eat of the eternal Divine Life, He Who Is our Bread of Life, that we shall live eternally with God.