One afternoon a fox was walking through the forest and spotted a bunch of grapes hanging from over a lofty branch.
"Just the thing to quench my thirst," quoth he.
Taking a few steps back, the fox jumped and just missed the hanging grapes. Again the fox took a few paces back and tried to reach them but still failed.
It's easy to despise what you cannot have.
Source: http://www.umass.edu/aesop/