Remember that the NES didn't do the business in the UK that it did overseas. The Master System (with its superior graphics) was by far the more successful console at the time - I never even knew anyone who owned a NES. It just wasn't a big deal over here as it was in America where it seemed that 1 in 5 people owned one, much like how the Spectrum never made the dent in the US that it did in Europe where it was the No.1 home computer (and you're missing out if you've never played classics like Ant Attack, 3D Death Chase, Wheelie and The Train Game).
I went from Spectrum to SMS, to PCE, Amiga, Mega Drive, Saturn, Dreamcast, PlayStation, PC...etc. Classic DOS games are also a field I'm missing out on. I've dabbled briefly in a few NES roms in the past, but never properly tried to play them, it's going to be interesting.