I'm in my 40s. Both my parents are alive, and have a house full of stuff. I live in a different house, 3.5 hours away at highway speeds, full of different stuff. It doesn't really matter to me if my parent's dining room table is a nicely crafted table - I have a nice table, and I don't need two dining room tables. Getting it to my house is a tremendous hassle. Picking between them is a tremendous hassle. And then I still have all the other stuff - the hutch, the chairs, the couches, the beds - and only one sibling to split them with.
"Rampant, commoditization consumerism" didn't cause this, longevity, freedom of movement, and independent living caused this, and I wouldn't trade those away for an heirloom table.
They had beautiful, carved wooden dressers and wardrobes from their parents that they, naturally, did not appreciate and take care of, so they turned into garbage and were thrown away when they became too dilapidated to move to another building. They were replaced with the standard fare particle-board-and-laminate Ikea-type trash that I definitely do not want. It's falling apart already and they've only had it a few years.
If they had maintained the furniture they were given by their parents, I would love to keep them around in my home and give them to my children when I pass, too. But I don't want cheap, mass-produced garbage from my parents simply because it belonged to my parents.
My wife and I are both the youngest in our families, and all of our extended family uses us as a dumping ground for stuff to they're too guilty to throw away or donate. About 10% of the time it's something actually useful, 90% we already have a better version of whatever it is or simply don't want or need it.
No, I'm not taking my father in law's perfectly good TV. I have a TV, and the one he bought was mediocre at best when it was new.
Look, I'm not saying there aren't reasons for it. Obviously the economic value of a TV is now low. If you're posting on HN, chances are you can afford a new TV in a day's work, which may be less overhead than storing a TV for when you or someone else might need it in the future. At the same time, this is a historical abnormality. A television is a miracle device made with extremely advanced, relatively speaking, technology. 50 years ago, it would have been insane to snub your nose at that. To you it's a disposable good, to an older generation there is no reason to view it as such (and, I'd argue, this cultural value of disposability that is being forged is extremely bad and not actually sustainable for our society long-term).
It isn't an artifact of modernity that people don't want stuff like that. And as for stuff that is an artifact of modernity, the generation entering their 80s today lived through the widespread adoption of color TV, the moon landings, the space shuttle, cable TV, mainframes, PCs, CDs, VHS, DVDs, the internet, cellphones, smartphones, and freaking microwaves, never mind all the advancements in autos. You'd think someone with that lived experience would understand that times change and their kids might not want all their old stuff for the same reason it's been sitting unused in their garage/basement for decades.
My diagnosis is it was boomers who wrote the script for "The Goonies", specifically the line "Goonies never say die!". They came up in an era where rampant consumerism was encouraged and even directly subsidized as a political policy, hell it was how we beat the commies! Hard to be a good consumer past a certain point if you're too aware of your own mortality.
By and large the kids already have perfectly useful goods but no room for more.
Do you need and can afford to keep somewhere another 6 creaky chairs, a big worn out dining table, bags of old clothes that don't fit anyone, outdated and broken electronics that probably don't work anymore, and so on? Even memories like pictures and videos are sometimes too much. They used to be a couple of photo albums, half with people you wouldn't even recognize, now there are TB of digital ones.