Everything is determined by the value system of the individual in question and people have different value systems.
For some material wealth and possesions does truly bring them happiness, they feel its an ebodiment of years of hard work and they can be proud to show off their wears for it. It's what gets them off in life.
For other people that is not the case and as you rightly said for those people nothing that truly makes em happy can be bought.
There is no right or wrong.
People are just different.
I have different prespective to the human species as a whole than you do.
People should simply be respectful of other peoples value systems (even if they don't agree with em) instead of trying to preach, judge and make other who don't want to be, be more like them