I think that clairobscur hit the nail on the head. Things that many of us take for granted really are luxuries for many people.
When I was growing up, my Dad’s income was in probably in the top 10% in the U.S., and my Mom’s wasn’t too far behind. Yet for a long time I viewed myself as “solidly middle class”. Never mind that we took a family vacation every year, sometimes overseas. My classmates and neighbors lived in houses similar to ours and drove cars similar to ours, and that’s what formed my perception of “normal”.
Now I live by myself, making about the median income for an individual. Though I do have to be a little careful with my budge, I live quite comfortably on this. I even have enough money to save for retirement, and engage in luxuries like eating out on occasion.
Some of my coworkers, making similar amounts of money, are living more paycheck to paycheck, and I suspect, feel poorer. Where does the money go? Most of them eat out every day for lunch, while I usually bring one. Many of them will go out to the bar, every Friday night, and sometimes Thursday too. Some of them live in bigger apartments, or in apartments closer to work. These sorts of things are luxuries that I was familiar with.
However, in my apartment complex, there are many people who need to be much tighter with money than I am. I have a studio apartment, which is quite nice for a single guy. But a number of my neighbors are couples living in the same size apartment. If my girlfriend were to move into this apartment… well, we could do it. We could fit in a bigger bed if we moved some furniture around. The biggest issue would be storage space. I’m using up all of it as it is. We’d each have to get rid of about half our junk. Growing up, I’d never really thought of having enough storage space as a luxury. One of my neighbors has a daughter, maybe 13-14 years old. I obviously don’t know what the sleeping arrangements are, but she certainly doesn’t have her own room, a place with any sort of privacy. I never considered being able to close a door to get away from my parents a luxury. That being said, there are apartments nearby that are cheaper. I live in a pretty safe neighborhood, but it’s not too far away that the weekly crime statistics go up pretty steeply. I never considered being able to live in a reasonably safe neighborhood a luxury, but I sure do now.
Sometimes the choice of luxuries is not “can I afford to send my daughter to private school?” but rather “can I afford to live in a place where my daughter will be reasonably safe walking to school?”. For some people, not my neighbors generally, but some people living not too far away, the answer is no.
But the person worried if he can send his child private school probably worries just as much about it as the person who worries if he can keep his child out of a gang. And so even though he is earning much more money, he still feels like he’s not really wealthy, he’d struggling to make ends meet just like everyone else.