Born Again

A man went in for a brain transplant operation and was offered a choice of two brains by the surgeon. He could choose either the atheist's brain which would cost him $10,000, or the Born Again brain, which cost $100,000.
"Does that mean that the Born Again brain is much better than the atheist's?" asked the man.
"Not exactly," replied the surgeon, "the Born Again brain has simply never been used."