When is a joke NOT a joke?

I just wanted to pass this on. It's supposed to be a joke, but it's not all that funny, considering.

The Devil is interviewing three of his disciples to be sent into the world to create havoc, which is his specialty. He questions them on what they plan to do when they get there. The first says that he will get people to believe that there is no God. Satan says that is fine, but that he won't get that many to believe it. The second states that he will get people to believe that there is no Satan. The reply is: 'that might get more people to believe, but not all.' When asked what his goal is to the third demon, he replies: 'I will get people to believe that they have a lot of time left.'