That is why I have been saying all day long that religion was invented by some really intelligent people to make money from the less intelligent. The modern religions are perfect business models.
I think different religions were created for different and varying reasons. Some for good, bad, fame, power, wealth or a even mixture, but somewhere down the line they usually become monopolised and capitalised on and turned into corporations. Just look at Scientology and the famous quote from L Ron Hubbard himself: "The way to make a million dollars is to start a religion".
Oh, and I think that was a George Carlin line you quoted: http://www.youtube.com/watch?v=QZ8hefESt7c