I don't like Nintendo, because of their anti-trust business practices of the past that forced great systems of the past such as the Sega Master System, TG16, and Atari Lynx out of the market. So no, I'm not a Nintendo fan.
I do, however, actually have a Gameboy Advance, and a Super Nintendo packed away somewere, that was a gift. So no, I haven't missed out on the last 20 years. I just don't like Nintendo personally.