30 years ago was the beginning of the Dotcom boom. The web started in 1994-ish and computers were becoming pretty wide spread. Almost everyone had a Commodore 64 or if you were (un)lucky a Windows 95 PC.
I have CD-Rs from decades ago that are fine... but I always used the whatever the Library of Congress used for archival purposes (they were the pricey dual layer gold ones from Verbatim)
Same here, but I have since re-backed them up to "cold" spare internal hard drives I have lying around that remain unplugged, in addition to my NAS storage. I just cannot trust them.
Robusta is great if you don't go with the low quality stuff. Good quality Vietnamese Robusta is very enjoyable (and much higher in caffeine than Arabica, which I think is a nice bonus).
There's also the possibility of hybridizing Robusta and Arabica to get the best traits of both. A few hybrid varieties, such as Catimor, have existed on the market for a while. AFAIK Catimor has some of the hardiness of its parent Robusta.
As always, you'll have the best experience if you buy whole beans and grind them yourself (or at least find a supermarket that lets you grind beans fresh). No instant coffee that currently exists will be able to compete with that.
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