Packed up my Amiga 500+ after 20 years in different cellars and attics, most disks seems fine, and my kids are fascinated by the late 80s / early 90s games :)
Some 3.5" floppies didn't even survive the walk between the computer and the library for printout. It all depends on what quality discs you could afford. The expensive ones was a lot better than the cheaper ones.