If you have been to a large Western city, you probably have seen church advertisements like "Jesus loves you" or "Jesus saves" on public transport. They involve no public spending.
In Turkey, I cannot imagine such advertisements, but a lot of public money is spent on religion.
I wonder, what would be reactions to such an advertisement on a bus in Turkey:
"There is probably no god. Now stop worrying. And enjoy your life."
It is worth noting that the Anglican Church welcomed the advertisement. They argued this would motivate people to think about God, and draw the same conclusion as they did...