A lot of people get some kind of hoarding syndrome with stuff like that. My dad had it with scrap wood and pallets. He was going to use them for firewood someday, but never did. After I took the property over, I spend years burning the stuff for the house, the shop and general bonfires.
We had another case in our county where an old retired farmer took a sledge hammer to the engines of all his old tractors and broke the engine blocks; he told his sister he didn't want anyone else to use them.