an Aesop Fable
A very hungry fox walked into a vineyard where there was an ample supply of luscious looking grapes. Grapes had never looked so good, and the fox was famished. However, the grapes hung higher than the fox could reach. He jumped and stretched and hopped and reached and jumped some more trying to get those yummy grapes, but to no avail. No matter what he tried, he could not reach the grapes. He wore himself out jumping and jumping to get the grapes.
grapes surely must be sour," he said as he walked away, "I
wouldn't eat them if they were served to me on a silver platter."
It is easy to hate what you cannot have.