Usually complex stories get in the way when it comes to games but RPG's are an exception, that's a genre based entirely around storytelling so if I'm not digging the story, I probably won't dig the RPG.
Pokemon is the big exception to this rule, not only is it the only RPG series that dosen't put any emphasis on big plots, backstories or character development, it's the only one that can get away with recycling the same goal and premise over and over and over again for over a decade, and still make enough money to buy the entire continent of Africa.
You gotta love Nintendo.