I hear you man and need to adopt that mentality. I have a lot of stuff some of it I consider archival material. I've donated well over 1,000 books in the past and need to donate hundreds more.
When I left my last corporate job 15 years ago (wow). One of the managers asked me on my way out the door, "Troy, you don't have anything to take with you?" I was like. "Nope." I was acutely aware that I was not going to around months before I left.
I just discovered that I lost all of the discussion forum data prior to 2010! Well I did not lose the data. I transferred the domain registrar to Google from a much smaller company and I broke the site?! I need to fix it because there were some great posts there.
@richardmurray I see now that it is up to the individual to maintain their information, but technology failures and changes, and individual fallibility really make it difficult for individuals to save their own information.