I am not a hoarder, when I think something has served it's purpose I get rid of it. But I now have sympathy for hoarders, and understand they will have no regrets over things they have given away or even ruthlessly thrown away.
I completed my studies, okay I don't want to tell you how many years ago, and some years later I threw out my books, projects, the silkscreen frame etc.
When I was helping G move his office I came across a copy of a book I had thrown out. My heart was sore. I wondered how it was possible that I could not have valued that book. I asked G if I could have it and so now I have a replacement. Although to be honest it doesn't feel quite right.