> Specifically, for the least happy group, happiness rises with income until $100,000, then shows no further increase as income grows. For those in the middle range of emotional well-being, happiness increases linearly with income, and for the happiest group the association actually accelerates above $100,000.

Exactly. There are other things you can do to be happy and some personalities are simply miserable, but there's nobody who's better off with less money. I'd be curious to see if this holds in societies with better social safety nets for whom money isn't as directly tied to survival or options in how to live.