I've been a Promash user since the beta version.
It does everything I need, I can add ingredients, and export my recipes and brew sessions as text or html. No updates needed, and nothing broken to fix. What more does anyone need in a brewing software? who cares if it is 8 bit when it is accurate and does all I need?
I installed mine on a flash drive and carry it in my pocket. I can use it from any PC, and I don't need web access. my recipes, brew sessions, ingredients all go with me. I've used it under win95, win98, xp, vista, and now win7 with zero issues. no registry entries needed, no system files other than what is in the pm folder.