Your life is what you make out of it. I work hard, think consumerism is dumb, and I generally spend my extra income by investing it. But I also enjoy getting some really great coffee (not necessarily from Starbucks) or watching a really fun TV show. Try not to worry too much about what frivolous things people spend money on, or it'll drive you crazy.
Because it's either BS consumerism or subsistence farming?
The same is true for a number of horrible things too: some people like them and go for them. That doesn't make them less bad.
I'm not in favor of total relativism...
That said, I think a lot of overconsumption originates from traumatic childhoods (people trying to fill a hole in their hearts) and the welfare state (people don't know what things truly cost).
Actually they are quite limited on their own. And they're not usually about things either -- aside from food and shelter, people want sex, love, security, etc.
That's why it takes a whole lot of convincing, advertising, conditioning etc. to get people to consume at the level modern societies do (and it took a whole lot of convincing, installment buying, easy credit etc. and nagging to jump start this trend, back in the pre-WWII days).
For instance, Elon Musk has developed a desire to colonize Mars. Bill Gates has developed a desire to combat malaria. That is exactly the sort of thing that has to happen in everyone who acquires great wealth. After seeing to the needs of your immediate family, and possibly also your grandchildren, you have an economic duty to spend money, and not just invest it such that it comes right back to you.
Ordinary folks never have quite enough socked away that the economy has to worry about their non-circulating currency. But the rich, as a class, seem to lack the vision to "throw away" their money on grand-scale consumption. The middle classes have picked up some of that slack by buying phones and game consoles and affordable vacation packages, but that has largely served to make the wealthy wealthier, still with no corresponding increase in vision.
So the economy has two options. The rich start actually spending, like Gates and Musk. Or the government breaks the misers' fingers and pries the gold bars out of their grip, to spend on enormously expensive things like wars, welfare, and mega-engineering projects. The latter choice has become somewhat problematic, as the wealthy have discovered and developed ways to recycle the government spending back into their pockets before too much of it is lost to the hoi polloi--largely thanks to the military-industrial complex and corrupted political systems.
So what can a non-wealthy person do to unlock those resources wasting away as the immobile savings of the wealthy, or the tight-looped investments that turn only a few economic gears before returning to the coffers?
Try to get them all addicted to expensive drugs, perhaps? It would be nice if the rich folks of this era actually developed some sense of noblesse oblige, and decided to spend resources on developing the general welfare rather than increasing numbers on balance sheets. Depending on the scale of the wealth, this could be a patronage fund for local artists, or supporting donations to cultural institutions like museums and libraries, or underwriting improvements in the public transit system, or even collecting expensive items like classic cars or celebrity memorabilia.
If your only desire is to be Scrooge McDuck, and swim in your vault full of money, society is far better served by inspiring your heirs to have expensive dreams, and then arranging an unfortunate accident for you. If you don't want that, then spend some of your rassafrassin' money on isht you don't need, whenever you can afford it! If that cash doesn't move, some people out there might not be able to find work.
What about incessant advertising?
Personally, I think the only real reason to have human workers in our automated future is to have some human contact. So there's no reason to have human baristas: those people stand behind a counter and I may or may not be able to interact with them, depending on how the establishment is laid out. But if I go to a café and sit in a comfy chair and order a drink, I'd rather have a cute college girl bring it to me than a robot.
So basically, until femmebots are invented and perfected, the big value that humans can provide that robots and automation cannot is sex and socialization.
And if they ever invent AI robots that look and act just like people, it's all over for humans because the robots won't have our annoying flaws.
Or like the old definition of "hacker" WRT computers.
The ship has sailed, begging the question now means leading someone to ask a question, hacker means two minutes hate against computer criminals, and hedonism means laughably pitiful time preference problem or what is the opposite of a wise plan for the future.
I would argue, however, that hedonism is a human philosophy that leads to pleasure maximization, which means consumerism and excess compliment it.
There are other ways to live your life, that seek to maximize the impact of your effort in other's lives, which do not work was well alongside consumerism.
My wife does...
I work a certain amount to earn the basics, and everything after that is for nice things that I want. Is that bad?
It hasn't, and we're still working 40 hours a week, but now it's to support the consumption machine that WWII created. Do we really need new original Netflix programming? Do we need whatever crazy-ass pumpkin and coffee flavored beverage a hard working soul at Starbucks or Tim Horton's has cooked up for the fall season? Do we need bigger, cheaper televisions? Faster computers? A new diet craze? A new exercise regime that will be better than the last? Where does this end?
Not to be overly dramatic on a Monday morning, but where are we going with our hustle and drive? When you stop and meditate on that, you realize that to feed, house and clothe us requires 10% of the energy we burn every day, but not if we expect a hedonistic lifestyle where you eat something new, fresh and delicious everyday. I'm not free of that expectation either, so that's not a judgement, just an observation.