I do agree that there are many factors relating to decrease in values and that changing tastes and the way we live now play a big part in it. My folks had a lovely solid Mahogany dining room set in very good condition. The set was the table, 8 chairs, the China cabinet and a really large, heavy buffet. Not only do my sister and I already have our houses totally furnished, but I wouldn’t have the room for all of those pieces if i wanted them. So, I contacted a reputable antiques guy in our area to see if he had any interest and he said “I’ve got several barns of pieces like this that I can’t get rid of. Young people now all want IKEA, not pieces that they equate to their grandma.” So when we finally found someone who paid $800 for the entire set, we sold them. It killed me but you gotta be realistic about it and not be silly enough to pay storage on it. I have a few charming antique pieces that I love but I’m sure they will be given away for nothing when I’m gone.
I will say that when I put all the Christmas decorations away the other day, I did box up my childhood ornaments separately from the other items and put notes with them to identify that they are from my childhood and some even older than that. If my heirs trash those Christmas items, I’m coming back to haunt them every year!