There is ONLY ONE True Religion - It's fact
Imagine for a minute, whether you believe in God or not:
You die.
You meet God.
God says "There is only one true religion on Earth today. Before you now are multitudes of doors. One for EACH religion on Earth. To live with me in Heaven (paradise, whatever...), you MUST choose your destiny by walking through the door of the religion you believe to be the truth (or closest thing to it). If you choose wrongly, you will not live eternity by my side. If you refuse to choose, eternity in Hell you will spend."
Which Door (Religion) would you choose?
* I don't believe in God (today), and I don't believe in religion any day. But just for shits-and-giggles....