Let me break it down for you:
If you do not know that they are imaginary, then you are a loon. Because they are, in fact, imaginary
to everyone else, including the members of your own religion, who imagine them differently. Still,
this case is relatively harmless.
If you do know that they are imaginary, but still go through the motions, then you are just like
the pope and most of the clergy: you don't really believe jack shit, except that you deserve to get
your cut for telling people what you know are lies. For example, pope's complete disregard for
the New Testament ethics is plainly evidenced by his treatment of celibacy, contraceptives, priests who
molest children -- you name it. They are all case 2, and we know they are in it just for the money
and the power. What's the harm, you say?
You are thinking too concretely. Please note the difference :
- I believe that unicorns exist
- I believe that the idea of unicorns exists
Now consider :
- I believe the Ideal Gas Law is true.
- I believe the Ideal Gas Law is a reasonable model for simple cases.
If I said 'Santa is generous', I think most people would agree, and not be mislead into thinking that I actually believe there is a Santa. I can believe 'Santa is Generous' without needing to believe that Santa is a real person.
Too subtle? Too nuts?