[lloeki]

learned vi when I had to develop on a IBM RS6000 with AIX 3 (or 4, but we had to support AIX 3 as well) around 2008.

best shell available was ksh, and the only really usable mode was vi mode.

in addition the only worthwhile editor available on this system and customers was vi. (IIRC emacs was obtainable but not installable on customers machines, and heck of a lot slower than vi)

[kps]

As Mitch Hedberg once said,

    :2s/wa/i/g