Lifelong Christian had to face the facts

[theophilus]

But as long as we're discussing the possibility of people/beings existing or not existing: if absence of proof doesn't necessarily mean non-existence, I'm all for believing that somewhere out there Jessica Rabbit actually exists.

You might enjoy reading The Number of the Beast by Robert Heinlein. In it a man invents a spaceship capable of traveling to alternate universes and using it he even visits worlds that exist only in fiction.

The odd foursome dash off in Gay Deceiver , Zeb's sports car spaceship, outfitted with the professor's continua device and armed by Australian Defence Force, into various fictional universes. There is sex, rivalry, and even a trip to Oz. An attempt to visit Barsoom, curiously, takes the quartet to a different version of Mars, seemingly under the colonial rule of the British Empire. However, near the end of the novel, it is obliquely hinted by Lazarus Long that they had in fact been to Barsoom, the "colonial Mars" being an illusion imposed on them by the telepathically adept Barsoomians:

http://www.reference.com/browse/The_Numb...28novel%29