It's a phenomenon only a lemming could truly appreciate. With European teeters on the edge of a multi-national economic collapse and nobody in the U.S. able to find a job -- never mind a decently paying, enjoyable one -- some top ATP pros are complaining that they're overworked and underpaid.
Lastly, lodging these complaints at this time of economic uncertainty (wait until tournaments start going under -- then we'll see how arduous the calendar is) seems at best tone deaf, especially in a world where nobody's life is being lost or saved because of tennis.