Our life gets more meaning if we believe in God. Which enables us to know the reason we're on earth. Faith gives hope at hard time. Prayer brings more peace. When you believe in God you will be more confident that God will always protect you.
Proverbs 3:5 Trust in the Lord with all your heart.”
When we look around the beautiful things God have created for, we have no reason than to believe in him. The nature around us, beautiful trees and flowers. Waters to drink if we're thirsty. God made all these things for us to live comfortable and worship him.
Believing in God also helps people live better lives. It teaches love and kindness. It teaches honesty and forgiveness. Faith helps people choose what is right. It brings people together. It reminds them they are not alone.