Many moons ago
back when I was a junior dev in South Africa I worked for a large forestry company. This company had a lot of research staff who liked to fiddle.
One several occasions we would have this scenario: there would an MS Access db application that one of the researchers had cobbled together to help him in his day to day work. He would then share this with his colleagues. And in some cases the researcher would have moved on to a new job, shuffled off from this mortal coil, or simply forgot what was happening in the back ground of the app
Then suddenly IT would get a support ticket as something had gone wrong, and as the whole department was now using this Access App it was mission critical.
Ok, where is the documentation? What's that.
Ok, what does it do in the background? Not sure (often some very complicated modelling).
Do you really need it? Yes!
And so a rewrite of the MS Access App into Oracle and .NET1.1 would start.
My boss eventually banned all users from having MS Access.