Income from labor [in the United States] is about as unequally distributed as has ever been observed anywhere.

I have an income nearly sufficient for my wants (no one's income is ever quite sufficient, you know).

Above a certain level of income, the relative value of material consumption vis-a-vis leisure time is diminished, so earning a higher income at the cost of working longer hours may reduce the quality of your life. More importantly, the fact that the citizens of a country work longer than others in comparable countries does not necessarily mean that they like working longer hours. They may be compelled to work long hours, even if they actually want to take longer holidays.