I have some 32-bit systems (arm and x86), and it looks like I’m going to use them till the hardware breaks. The old x86 system is power hungry and inefficient, but the thing is, I power it on very occasionally. Like for half a day once a month. So its power consumption isn’t an issue. Probably I should consider some BSD for it. But what should I do with an arm system, if that’s applicable, I have no idea.