Did you ever wonder why less than 25% of Catholics attend Mass? I mean if Jesus is present Sacramentally in every Catholic Church on every street corner (and He is) shouldn't His presence be enough to attract every person in the world to Him? This is an existential question which stems in man's rejection of the divine and can not be answered here. But Jesus did give us instructions. We are the Mystical Body of Christ and our Church is the living witness to the invisible God.