modern PC for day-to-day
dude, completely different matter
a vintage system like a motorola 68000 board is all a piece of primitive hardware where the firmware is written in pure assembly, and that is fun for those who were there when PCs were that way.
we certainly have simulators, I wrote my own m68K in C (2006?), they are more confortable to be bring along if you travel, no doubt they are funny, but having to deal with real hardware gives more fun if you can deal with your solder and those electronic things, and arduino is just too boring
being said that, frankly I don't have the time to build my own S100, I have already built my 68060 board when I was a student, it's too big to be carried along, sometimes when I am at home I like to play with it, it also comes with an EPROM emulator (recycled from an activity I did for for a customer), it uploads things faster than a fsk, so it's very funny, but I am not directly interested in those things, I am already fine
I have opened this topic because I accidentaly found this project, and I think it might be interesting for those who are looking for their first (or second) chance to build their own vintage SBC; I mean, the S100 project comes with some project files (PCB? gerber? schematic? pieces of assembly code?) and ideas