Great machines. My dad, who is in his late 70s, still runs a number of beige Macs on a network, all running OS 9. There's a beige G3 Desktop and a 8200.
I've often wondered whether advances in hardware -- transistor density, etc -- have made hardware more or less long-lived. In other words, is the simpler, basic kit more rugged than the precision stuff of today?
I'll be impressed if my 2012 MacMini will still be running in eighteen years' time. 2030! Hey. I'll be impressed if I'm still running.