Because religion is laughable

Creationist Ken Ham Evolution

Creationist Ken Ham Evolution Joke Picture
Creationist Ken Ham Evolution Joke Picture

One day a zoo-keeper noticed that a monkey was reading two books: the Bible and Darwin's 'The Origin of the Species'. In surprise he asked the ape, "Why are you reading both those books"? 
       
"Well," said the monkey, "I just wanted to know if I was my brother's keeper or my keeper's brother."