But seriously: Stuff disappears, not doubt, although if I remember something I can usually still find it online. I virtually never search something in the stuff I downloaded for years, because it is just easier to dig it up online - and that is not because my archive wouldn't be accessible. If it is important for me to remember it is probably important for others to keep it online.
With time I've learnt that not even archive.org is reliable for some things so I save whatever I can. Sometimes I even take screenshots of things that I may need someday.
I've never stopped to think of that as "hoarding", but probably it is. Thank God those files don't take physical space at home, though!
Do you mean you are happy that the files don't take up physical space at home like books do or do you mean they don't take up space because you store them in the cloud. The last thing would really make a difference because I think it's something old people like me don't typically do.