You need to learn not everyone must follow your lifestyle because it's up to anyone choice.
There's a person who think live is short and he must try anything he can without need to think about money, so he will spend all of his money without thinking about tomorrow because he believe he can find a way to survive tomorrow.
Another person who life in balance, he spend a good amount of money for entertainment and save some for retirement.
And another ones who're an oversaver, he will spend as small as possible for his need and save as much as he can to retire earlier.
In the first place I perceive the op trying to point against pretentious and competitive lifestyle (pretending you have it by spending like others who might have more or not) when one is only busy spending in a day what it took months or to gather (spending three months pay in a week) when there is modest means (trying to live within affordability except necessity) .... To think of it, spending on unnecessary appetites.
However, some things are fundamental truth... Like you are pointing different persons with different choices. (that means some people actually choose lack by spending more than they really have)
if a statistics is taken on those living today a pretentious and competitive lifestyle, living above affordability, you'll see up to or more than 85% living in regrets tomorrow....just as many are regretting today... (Had I know)
On that, not living above one's affordability is somehow a fundamental truth even true about a business and a nation/country.