i know still some accountant who use a DOS program to do his work because he hates the fact modern UI has load times. slows him down too much o.O (his program is all keybinds).

i do not have exp myself but i found it a delightful reasoning. i told him modern PC could also do the same on modern OS (ncurses or ratatui or so maybe) but that if he ask a programmer to make an upgrade he'd need to find the right kind of guy. He had someone do it few times but they came back with web interfaces.