If you are wrong and there is no god then you have been wasting your life worshiping a fairy tale.
Why is it a waste? If there is no afterlife, by the time you are dead it does not matter to you how you lived your life because you do not exist anymore.
Why is it a waste? If there is no afterlife, by the time you are dead it does not matter to you how you lived your life because you do not exist anymore.
Because if it were true then this is the only life you will have. That makes the value of it much more significant. If you spent your life worshiping a god that didn't exist then all that time you spent doing so is wasted.