I know it's been said before, but it seems pay is not dependent on how useful to society you are, but is instead dependent on two factors working in tandem.
1) Do those with money perceive you to have a use?
2) How difficult is it to find someone else that can replace your use?
I can't help but wonder if stress to pay ratio works as an inverted bell curve. At the lowest levels of pay you find the most stress. Then we move to middle/lower-upper class levels of pay and find much less stress. To get above those levels of pay, you'll likely have to start your own company or work extreme hours at a high skill job and once again experience heightened levels of stress.