The thing is, people say this, and I am sure for some amount of content it's true. However I eventually realised I have never had a single issue if required, in retrieving literally any piece of software or digital content after the fact from somewhere on the internet.
It's pretty much why I care so little about what happens to my steam library when Gaben kicks it. If I get the urge to replay something in twenty years that I paid $3 dollars for and its suddenly gone, i'll just go find it elsewhere.
Once I had gotten pretty much everything I wanted from running a large scale storage system (largely to learn the in's and outs of linux/general storage concepts) I pretty much just gave it up. Its a lot of money to hold onto things that at this point, I pretty much know i'll always be able to recover elsewhere. I'd rather someone else pay the electricity/drive cost for me.