On the other hand, a decade or so ago my wife made me get rid of most of my collection of antique computers (from the late '60s forward). At the time, there was

On the other hand, a decade or so ago my wife made me get rid of most of my collection of antique computers (from the late '60s forward). At the time, there was little monetary value to most of that. Now, however, almost everything in it is worth pretty serious money. I estimate that if I still had that stuff and sold it all today, it would be worth around $150k. The underlying problem is that it's essentially impossible to know what will and won't be worth anything in the future. Cheap tat can become wildly valuable, and expensive high-end stuff can become worthless.