The UK was very into ZX - first the ZX80 and ZX81, and then the Spectrum. For that generation, in the UK, Spectrum is the start of everything.
I was an Apple child myself (a function of the machine my dad brought home), a BBC Micro at school (because... education), but in the mid 80s the Apple switched to IBM, and I've been on the PC track ever since.
I've met other groups for whom Vic 20, Commodore 64 and especially Amiga hold that first-love status. I'm just blessed to be that generation where the hardware was there at the right time.