Think of Christianity as a spiritual gym where we must regularly exercise and challenge our spiritual selves in order to reach our potential and remain spiritually healthy.
You opened the lines of communication with God on the day you were born. You affirmed it on the day you chose to believe in Jesus.
Open your heart.
Or perhaps they believe they deserve the gifts they’ve been given for for obeying God’s will and there is no need to thank Him. What a blunder.