I am grateful that God has revealed his identity. Through his creation, we would have known that some kind of deity existed, but what kind? We would have been clueless.
The Bible points to a God "who forgives all your sins and heals all your diseases, who redeems your life from the pit and crowns you with love and compassion, who satisfies your desires with good things." He "works righteousness and justice for all the oppressed." He is "compassionate and gracious, slow to anger, abounding in love."
God has a character worth worshiping. When I notice his qualities in people, I admire those people. When I consider where those qualities originate, I worship.