> People no longer need 50-100 years furniture, because nobody wants to inherit old stuff anymore.
I'm going to challenge this assertion: did anyone, ever? Looking around in my parents' house (retirement age), there's no furniture from their parents (post-WW2). I don't remember whether my grandparents had any furniture of their parents in use either.
I do recall going to the charity shops and finding older wooden furniture; while I recognize it as better quality as what you can get today, at the same time it's no longer useful today. TV cabinets (with doors) for CRT TVs and video tapes, writing tables, those kinds of things are obsolete. Tables are timeless though.
But also, over time a lot of that old furniture was either destroyed or bought up and exported. What you find in the charity stores near me today is mostly 90's and onwards.