[jerguismi]

Well, if you really use money only for basic food and essentials, I think you can survive with very, very little money. I did that when I was a student. Life can be just quite dull if you eat that kind of food from day to day.

What I see is that most people just appreciate the luxury today more than the savings which would enable more luxury tomorrow. I think there's nothing wrong with that. You might die any day in a traffic accident, so why bother saving all that money? Those are quite subjective decisions.

[CompelTechnic]

Hyperbolic discounting is the term economists use to describe people liking things a lot more now than later:

https://en.wikipedia.org/wiki/Hyperbolic_discounting

The hedonic treadmill is, in a nutshell, the reason we become complacent to newly acquired luxuries:

https://en.wikipedia.org/wiki/Hedonic_treadmill

So not only do we want fancier things now, but we don't really appreciate them when we have them! Humans are silly.