lets see, in my 40's, got middle age spread
,geeky, sci-fi fan and interested in making my own computer gear.
My first computer was a ZX Spectrum 48K. It has several interfaces, joysticks and add ons. My favourite game on it was Atic Atac, which is now bizzarely owned by Microsoft. Still have the Atic Atac tape, but it appears to be stretched due to use and will not load. Think when I get a chance I will play the audio into Ardour, Cubase or similar and compress the length of play slightly, then send it to the spectrum to see if it loads.
A few years later I picked up a BBC B 32K with monitor, followed by a BBC Master with monitor, light pen, AMX mouse, co-processor and rom board. Since then I have picked up various things for the BBC that are being mostly thrown out, from break out boxes to a buggy. My BBC Master has more peripherals than most modern PCs.
I was given a BBC 3000A and I picked up a second for spares on Ebay. The metal monitor stand is a really good idea.
I was given an Archimedes 7000+ which works really well and has been expanded to 128mb.
Also have an Acorn Electron, Atari Mega, Amiga 500 with 501 expansion, Amiga 600 and Amiga 1200 with midi expansion, blizzard 1220 (4mb) and internal SD card expansion.
All my computers are still fully working.
Risc OS is my preferred OS for the Raspberry pi as it is faster and more familiar to me since the BBC 3000A days. Just have to make sure to keep remembering that ARM has switched from 26 bit to 32 bit addressing. I intend to use the Raspberry Pi to get back into programming again.