I have never seen any discussion of the durability and/or longevity of solid-state devices. Thumbdrives are fairly fragile, -as when brushed against whilst sticking out of a computer- but as cards and thumbdrives are getting very cheap, and I'd like to know if they are a viable option. Of course, again we need drivers for them, which are almost invariably on CD in case computer technology leaves them behind. I have one old thumbdrive that works on nothing, because I've lost the driver.
My own small collection of cassette tapes have deteriorated noticably. They were kept at room temperature. Even the fibre-tip ink I used to label them has mostly gone.
Paranoid photographers used to store film in refrigeration.