ITT, very salty IT guys...
I'd rather folks use Excel then some home made stuff. That's the real nightmare fuel. VB, not .net, just VB, from 1995. You'll beg to have bad Excel after you deal with that stuff. 😵😱😭
My first internship was with a company on IBM RPG. My parents were literally not born when that system came out. We had to use telnet to talk to it. I am sure they are still on it. Most people didn't even use it, they had a system of paper notebooks.