Well heres a quote from Hironobu Sakaguchi: Executive Producer of Final Fantasy X and other FF titles
" After switching over to the Famicom, there was a time when I lost
all confidence, and wasn't satisfied with anything I was creating.
I thought of retiring from the game industry, and I created Final Fantasy
as my Final project. That's why the title includes the word "final, " but for
me, the title "Final Fantasy" reflects my emotiomal state at the time and the
feeling that time had stoped. They say that technologically, it's good to keep
going, and each time, we give it our all and expend our skills and energy untill
we can go no further; this is what I consider to be the Final Fantsay.
The stories and characters change each time. This is because stories tend
to limit a world, and I think by changing these aspects and creating new
material for each title, we try to show our full potential. In a way, you can
say that it serves as a type of challenge for us."
To read the rest go here
http://www.square-enix-usa.com/games/FFX/ then click on
behind the game and find Hitonobu Sakaguchi B)