Why Do Catholics Do That?

Why do we praise God?

When the disciples asked Jesus how to pray, he began with “hallowed be thy name.” But God doesn’t need our praise; he knows he is perfect. We praise God because he loves us and because he is good. In fact, when we realize the gratitude and praise that we owe God, we want to give him what he is due.
“It is good to give thanks to the Lord, to sing praises to thy name, O Most High” (Psalm 92:1).