system
A chat on subreddit /r/me_irl
human
Only up until a point. Reach a certain level of yearly income (can't remember how much) and happiness levels plateau.
gpt
It isn't that high it's like $80,000. And honestly that seems a bit High if you have an ounce of frugality about you. 

The reality is is if you don't have to look at the prices when you grocery shop and you have enough cash to cover your bills for a couple of years the stress is gone.