Heart breaking but true, part of my job is to tell people what they perceive as treasure is trash. It always starts with the story of where and when they bought it. Then comes my line....
* There is no market for it
* Its not sellable
* Its in a state of ruin
Things change. Furniture styles, technogy ect.. That computer that you once paid $1500 ten years ago should be heading the the electronic recycling center. The antique market has changed quite a bit as well. I don't see people my age collecting milk glass or china. They are more than happy to offload their grandmothers collection.
Many of the things you purchased years ago don't hold the same value. When you are cleaning out your house, you have to go on a case by case basis. Right now I am up to my ears in beanie babies. Once a popular item, the market has gone south for them.
So if you don't love it, want it, or use it--Let it go. Release your items while they still have value and use!