Whenever I feel like playing an FF game, but not really in the mood (I know, it's confusing), I just think back and remember the good parts of it. Then I try to get to those good parts before quitting for another time.

Examples:
  • FFV - Fun game, plus I haven't beaten it yet. So, I must play it .
  • FFVI - Well, I haven't beaten it yet, so I don't need a reason.
  • FFVII - well, I almost don't need a reason to play this game, it's just outright fun
  • FFVIII - I like that menacing sound they play whenever Ultimecia is involved with something (when you're in the sewers with Quistis, when (SPOILER)Ultimecia takes over Rinoa, etc...)
  • FFIX - I don't know, I have to think of some really good parts usually, like the Bahamut vs Alexander part.
  • FFX - This is also pretty fun. I usually don't need a good reason.
  • FFX-2 - Well, I've only beaten it once, and I blazed through, so I need to eventually play it again to see the good and perfect endings (yeah, I missed the good...forgot about pushing 'X').
  • Final Fantasy Tactics - The battles alone are the best thing in this game, and that's pretty all the game is. Therefor, I need only think of the battles .

Any FF game not listed, I don't own.