I wonder if it's time for the series to end? In a lot of ways, Final Fantasy is the product of the era in which it was concieved. Dungeons and Dragons came about in 1974, and it was this environment in which the seeds that grew into Final Fantasy were sown.

Who's to say that role-playing games are eternal? Eventually, things fall out of fashion and go by the wayside. This is the beauty of transient things, that they don't last forever.