If I can't display it, I sell it. There's no point in having a "cardboard box" collection to me. But I did catalog it all. Two years ago, part of my collection got damaged, and I had to fight the insurance for almost a year. They don't mind you paying each year, but once you have to prove what it's worth when it's damaged...
"Everything has an end.
Except sausages, which have two..."
For me, it is because I don't have the space to display it 'yet'.
But once my daughter finishes college and moves out completely, then I will have the display space for it (one I build the shelves and such)
So, for now, I box some stuff up, for future display.
But I do have many different lists on my computer so I know exactly what I have, and what I still need to find.