Good lord, why?

Very cool. I got to play with one (and a 3b2) in the early-mid 1990s, just after Linux was starting to come in and the Unix PC and 3b2 were technically "obsolete" and they were still enough to turn some heads.

Coupled with a good old Hayes external dial-up modem (young ones don't have a clue on those) via serial, run terminal emulation and it can talk to the remote host - surely, why not.

Looked like an old XT style keyboard before the AT/PS2 keyboards became defacto standard - got a few KB adapters sitting in the junk bin for spare parts.

Our office had Wang PCs (AT/8086's) that had 3270 cards. All of these ran without a mouse ... :D

Custom written software which still does the job. We have, of course, migrated most functions to modern systems. We do need to reboot a few times per year, and deal with the occasional component failure, but parts and knowledge are readily available for this particular machine which supports multi-tasking by simultaneous users.