Not everyone is in CC because as selfish as it may be, the short term gain of a string or days off to commute home to see family is irresistible. Or perhaps the financial gain from helping the company and going well into overtime far outweighs any pay rise possible in your wildest dreams. Almost everyone I fly with is impressively into overtime these days except for me. Obviously I must be on the "don't bother trying list" over at kitty city.