Or until it gets scrapped because it went out of fashion. People usually don't renovate because their furnishings are falling apart but because they want something fresh.

Does it really matter if people don't want to buy old furniture?

I tend to agree. Styles change, needs change as people move and/or change lifestyles. I have some pretty old furniture but I mostly own it because I can find a space for it--not because I'd buy it today.