I can't understand how such obsoleted piece of crap like Nintendos could get any attraction back then 
It was because of the software. Super Mario Bros. 3 was an amazing achievement on the NES. They pushed the hardware as hard as they could and the Nintendo Seal of Quality gave the customer confidence that the third party games would be up to scratch. Compared to the Atari 2600 days the NES was a breath of fresh air for North America. For Europe however it was pretty much irrelevant with our great home computer market and good home grown software development in the 80s and early 90s. Only once the SNES was released did Nintendo gain traction in the UK market.
