The phrase 'off with the crack of the bat' while romantic is really meaningless since the outfielder should be in motion long before he hears the sound of the ball meeting the bat.
We are at our very best and we are happiest when we are fully engaged in work we enjoy on the journey toward the goal we've established for ourselves. It gives meaning to our time off and comfort to our sleep. It makes everything else in life so wonderful so worthwhile.