For being discerning? Ignorance is bliss, I guess, but it's not my preference.
I can name atleast 5 good games per year from 1994 and on, most of them had great story, but either bad promotion or graphics, like Septerra Core.
I don't know, but if you evade some genres you might lose out some of the better games aswell, the best stories are still those of adventure games, I think those are the best part what remained true to the real pnp RPG-s, even more than computer 'rpg-s'.