I had an IOMega ZIP (the original 100MB one) back in the 90s, connected to my Amiga 1200. Those were definitely not a waste when they first came out. I used to run a BBS back then, and had a drive crash and yeah backup wasn't quite so easy or affordable back then. So I had to rebuild my file library.
I went to a local fellow Sysop with a few zip disks and had a file library back up and running in no time.