I agree with BenKenobi - it's your age. I'm 28 now, and it's only natural that I don't completely lose myself in videogames anymore like I did when I played Super Mario Bros 1-3 on the NES. Come on, EVERYTHING was better when you were young, wasn't it? The music, your vacations, everything.
In reality, there were shitloads of horrible games on the NES, SNES, Mega Drive and Master System as well. I've still got a box full of video game magazines from 91-95 in my basement, and I remember half of the games being rated 20%-60%, just like today. Cheap movie cash-ins, shameless EA sports rehashes, dumb Simpsons games - it was all there.
Edit: ZOMG, you're only 17... well, scrap all that. You should be worried.
Currently playing: NSMB (Wii)