https://knowledge.wharton.upenn.edu/article/does-money-buy-h...
There are exceptions of course. Some people are just predisposed to being unhappy no matter the circumstances, but generally speaking more money directly correlates to increased life contentment.
The article even ends with this quote from one of the authors of the study (emphasis added):
“Money is not the secret to happiness, but it can probably help a bit.”
"It buys a WaveRunner. You ever seen a sad person on a WaveRunner?"
It buys actual non-hypothetical liberty, as in greater choice to do what you like with your time and your self. It relieves one from unpleasant but necessary tasks (by paying someone else to do them).
The average American ain’t doing very well by OECD standards… literally bottom of the ladder.