You can count me in for one.

David.

Does anyone remember DOS PIP?

You couldn't get along without it!

I started off with the CP/M operating system, and used Wordstar, Supercalc, and dBase.  I upgraded to a PC clone, and copied these data files to my PC.  Through the years I upgraded these DOS based programs, and I continue to use them today.  I can't find better Windows programs which allow me to customize them to the same degree.  (But I need to use Microsoft and Lotus products so that I can talk to people who use them.)