Atheists: If the devil doesn't exist...?

Look in the Wii section to find the cute cuddly games. Also, Christianity doesn't have a monopoly on demons. They have existed for pretty much as long as we have, in one form or another. Talk to a psychologist or someone to understand why human beings have a fascination with evil and demons. How do you explain peoples attraction to blue hedgehogs that run at supersonic speeds and Italian plumbers that save princesses? Is this proof that those things exist?