People are happier if our work is interesting and satisfying. But we like to make money, too (for obvious reasons), which means there has to be a demand for our services (just ask most artists).
Here are some interesting data, with two comments: 1) salary data is median, not mean or ranges (average salaries and salary ranges can be quite different than the median), and 2) take projections with a grain of salt (humans are terrible at predicting the future).
