I've actually used terminals that didn't have cursor keys, as well as systems with original vi where the cursor keys didn't work because the sysop didn't have t

I've actually used terminals that didn't have cursor keys, as well as systems with original vi where the cursor keys didn't work because the sysop didn't have termcap set up correctly; and I regard it as somewhat masochistic to deliberately constrain oneself in this way, in the modern world where (in comparison) everyone (who has a serious keyboard) has cursor keys. Heck, home computers of the early 1980s had cursor keys. And nowadays we don't even have the excuse that there are some barmy terminals around that produce really odd character sequences from the cursor keys that we don't get configurations for out of the box. Even the world of terminals and terminal emulators is mostly DEC-ish now. I realize that people do it as an exercise, or out of curiosity, sometimes. But I have no intention of ever going back to that world. (-: