> The hedonic treill, also known as hedonic adaptation, is the conjecture that humans quickly return to a relatively stable level of happiness (or sadness) despite major positive or negative events or life changes.[2] According to this theory, as a person makes more money, expectations and desires rise in tandem, which results in no permanent gain in happiness.
That's the philosophical view. Research indicates that it might not be true if extrapolated to income vs. happiness:
> The hedonic treill, also known as hedonic adaptation, is the conjecture that humans quickly return to a relatively stable level of happiness (or sadness) despite major positive or negative events or life changes.[2] According to this theory, as a person makes more money, expectations and desires rise in tandem, which results in no permanent gain in happiness.
That's the philosophical view. Research indicates that it might not be true if extrapolated to income vs. happiness:
https://penntoday.upenn.edu/news/does-more-money-correlate-greater-happiness-Penn-Princeton-research